>There are people that legitimately think the answer is A
wtf? Explain yourselves, retards.
oh its this thread again
A.
fuck you.
ot:
D3 season 8 is out, who has the wings already?
>>709619765
Portal equals a doorframe
Doorframe falls on a cube, cube poops out on the other side without any force acting on it
Now shut up fag
It doesn't matter how fast the portal is moving if the object it's self has no momentum going in it's not going to have any going out. It's really not that hard to understand.
>>709619956
pretty sure OP was bait.
>>709619765
The cube doesn't have any momentum on it
>>709619929
so, if we take the "side" of the doorframe the is entered to be the orange portal, and the other "side" to be the blue portal, we find that the speed at which the door is moving towards the cube is the as the speed at which the cube is moving away from the door when it emerges from the other side.
So the answer is B.
>>709620014
Honestly I'm pretty sure it is because this isn't the first I've seen this, but on the off chance this is someone doing this unironically...
>>709620014
Oh? If this is bait then explain how the cube appears through the blue portal without ANY velocity at all.
>>709619765
Isn't there a level editor for Portal 2? Why not build this and test it?
And this is the view of the problem as seen when standing next to the blue portal.
It becomes blindingly obvious that the answer is B.
>>709619765
>C. Cube crushed
I died this way playing Portal 1.
>>709620254
In that case B is correct.
However, Afags don't want to accept it as proof, since it's "an imperfect simulation of what would happen in real life"
In reality, it's because they're sore losers.
the entire universe on the other side of the orange portal is moving
all motion is relative
however the orange portal stops on the table instantly
so the block enters the orange universe very quickly but it doesn't matter because they're both moving the same speed relative to each other (0) as soon as the orange portal stops on the table
therefore A
>this thread again
B is basically proven at this point. Stop trying to bait them OP.
http://imgur.com/a/IYOWC
>>709620181
The only reason it's going out of the portal is because the cube posses length. Imagine you are walking though a doorway. If you walk halfway through a door way half of you will be on one side and half on the other, if you walk fully through a door way all of you will have gone from one side to another. However if the doorway is moving and passes you and you're standing still, once the doorway passes you you will still be standing still and no matter how fast the doorway goes if you're standing still you be staying still when the doorway passes.
>>709620544
>The only reason it's going out of the portal is because the cube is made of stuff
nice non-answer there.
What is the speed of the box as it's moving out of the blue portal?
You should be able to answer this.
>>709620544
>doorway
Ok, doorway analogy is officially debunked. Anybody that posts it after this post is just a fucking retard at this point.
https://www.youtube.com/watch?v=DD-pPWOzWWo
>>709619765
I know this is b8, but whatever.
The answer is neither A nor B
>>709621325
C is just A but ignoring gravity like a fucking dunce.
>>709621325
Wtf? The cube doesn't just stick to the slope, your answer is A, minus gravity
Portals in Portal cannot exist on moving objects you fuck, so it's neither A or B.
You're all fucking faggots, and this question is irrelevant.
Portals can't exist on moving platforms.
Neither A nor B would happen because neither one CAN happen.
/thread
>>709621801
>my nigger
When the cube is appearing on the other side of the portal, the red dot on the face of the cube moves from point A to point B very quickly, and yet A-tards would have you believe that the cube has NO MOMENTUM AT ALL.
>>709621801
>>709621821
I bet you both failed phil 101.
>>709620102
the "door" has momentun, the cube don't.
the right answer is A. KYS, faggot!
>>709619765
Of course A. If a window zooms at you at the speed of light, and you jump through it, you don't suddenly burst into flames as you accelerate into ash.
You just jump through it and land.
Retarded.
>>709621325
The gravity pulling the cube to the table is almost non-existent, the gravity pulling the cube down the ramp is stronger. Depending on the angle of the ramp, the weight of the cube and the materials touching each other, the cube will either stay or slide down.
>>709621863
The only Phil I've failed is my father faggot
>>709621883
the door has momentum relative to the cube == the cube has momentum relative to the door.
>>709621913
>window
see >>709620801
>>709621801
¦:¬)
>>709621863
>phil 101
>phil 101 teaching basic physics
We already know you're not in college and haven't taken the course, you don't need to try that hard.
There is no force or any acceleration from the object being teleported, the only momentum is being created from the object holding the door.
That momentum cannot be transfered to a static object.
>>709622004
no, phil 101 teaches what a thought experiment is.
In other words: WOOSH
neither is right because portals disappear on moving platforms
>>709622071
You're late to the party buddy
>>709620413
Y'all need to listen to that man. He speaks wisdom.
>>709619765
>>>709622071
>You're late to the party buddy
This.
>>709622071
We're supposing that they don't.
>>709621969
Yeah, fantastic, great detective work. Except I'm referring to how it works in the game.
B makes sense to me. The cube has momentum relative to the portal.
>>709619765
just to clarify, you honestly think that a portal that the object is likely to fling through it just because it enveloped it quickly?
kek
>>709620801
He's right and you know it. Or you're just a retard how either can't accept the truth or doesn't understand it. Denying correct arguments against your opinion won't help much.
>captcha: STOP ONCE
>>709621940
finally someone with a fkin brain
>>709619765
Y'all retarded sons of bitches should go back to school
>>709622167
No you aren't, you're making shit up.
>>709622223
Have you ever played Portal?
>>709619765
They live in a different imaginary world to you.
>>709622212
People don't just understand reference frames.
>>709622183
Did you even look at the image?
They're 2 completely different situations and you have to do some truly impressive mental gymnastics to come to the conclusion that they're exactly the same.
>>709622223
It's the velocity of the cube that determines how fast it exits a portal. It would just plop out given that it isn't moving.
>>709622277
Yes, and it's irrelevant. Portals in game only work as a doorway because they DON'T MOVE.
>>709622404
>>709621059
Watch this video from about 4:40 to see why you're wrong.
>>709622416
Because they CAN'T MOVE.
>>709622404
Velocity relative to what? Velocity isn't absolute. The portal enveloping the cube means that the velocity of the cube relative to the portal is the same as if thrown into it at the same speed as the portal is moving.
>>709621325
Gravity will bring the cube down.
I agree the answer is A as long as the cube actually makes it all the way through the portal.
>>709622511
and in this THOUGHT EXPERIMENT we're supposing that they can.
>>709619765
A. you idiot. the cube has no momentum
>>709622544
In that case it's either A (no plopping but just sliding off), or C (too much friction working against gravity).
>>709622580
it has momentum relative to the portal.
The cubes momentum relative to my dog doesn't help us solve the problem. What matters is the cubes momentum relative to the orange portal, which is not 0.
>portals can't be placed on moving objects
Play portal 2 already, dipshits.
>>709622619
but that's wrong, and there are plenty of arguments as to why it's wrong already posted ITT.
>>709622690
>>709622544
fuck off retard.
>>709619765
Bait, portal would collapse due to movement before it reached the cube
>>709622645
Its just like throwing a hoolahoop over someone. As soon as the hoolahoop hits the floor, the person wont suddenly fly up because relative to the hoolahoop they were moving so fast. A portal is a direct connection from point X to Y, the same applies to a hoolahoop. The only thing that differs is the location of X and Y.
>>709620667
Holy shit dude you need to fucking kill yourself for being that fucking retarded, go back and read it again until you get it dumb fuck
>>709622484
Again, great, except we can only rely on what we see in-game to determine what would happen. If you're assuming that the traditional basic laws of momentum and energy apply to portal technology, you may need a different picture. Re-skin it to avoid confusion, because that isn't how they work in-game.
>>709621940
You are retarded just picture it for one second, the answer is A.
>>709622809
They do apply to portals faggot "speedy thing goes in, speedy thing comes out"
>>709620523
>relativity
Next your gonna tell me that gravity bends light.
I can't believe how fucking stupid you are. The cube would stand still, nor A or B. Stand still. There is still gravity pulling from the platform where it's standing you morons, and it's equal to the gravity pulling outside blue side. It's basically refrigerator magnet... A shitty one.
>>709622755
>i-it's like a hula hoop guys
This phrase indicates an A-tards confusion and lack of understanding. When confronted with something he can not understand or respond to, A-tards mumble, "Muh hula hoop" or "muh doorframe muthafucka". This is usually accompanied by ape-like screeches.
>>709620667
Seriously kill yourself you Mongoloid.
>>709622893
But static thing goes in, static thing goes out.
>>709622893
Momentum is velocity*mass, not speed*mass.
Anyone gonna comment on Einsteins theory of relative velocities?
>>709623014
So, what is the speed of the box when it's halfway out of the blue portal?
I'm waiting.
Can't answer without running into a logical contradiction? Poor guy.
>>709621863
The block will appear quickly but after completely going through the portal it would lose all velocity because the portal is acting as a doorway to the other side. It is like saying if you drop a hoop down around someone when the hoop hits the floor the person would fly up into the air.
If you had the cube, then you dropped a hoop over it, it wouldn't shoot up as fast as you dropped the hoop. The portal is just the equivalent of a hoop being dropped around the cube.
>>709622893
Yeah, portals if we dissociate the portals in the picture with the portals in the game, Portal. In real life if that's your assumption, sure. But if we're describing how the portals and the cube in the picture would work, in Portal, not some different portals in our 3-D world, then A is the answer.
If you're attempting to describe what would happen in OUR world, B is the answer.
>portals on moving surfaces
Inb4 that portal 2 bit.
>>709623149
Beat me by one post fucker
>>709623149
Hula hoop = both portals are moving, then both portals stop.
OPs problem: ONE portal is moving, then ONE portal stops, AFTER the box is already completely on the other side of the portal.
YOUR ANALOGY DOESN'T APPLY HERE YOU RETARD
>>709623174
from the hoops frame of reference yes, portals are a weird way of merging two frames as one so the laws of relative motion are maintained
>>709622973
This better be bait or you need to kill yourself right now for being this god damn stupid. Try thinking about the problem for a second, it might help you solve it
Oh look the box gains momentum. B is correct.
>>709623384
You're the one who clearly hasn't thought about the problem.
https://www.youtube.com/watch?v=eOBKIJ5dyHk
>>709622212
It is not the same because in the second situation the block has velocity but in the first situation the block has no velocity , so when it exits the portal the block will not fly out. So the answer is A.
>>709623405
Yeah, if you violate how it works in-game and pretend the portals work differently.
The picture asked what would happen in Portal. In Portal, it would be A. In real life, B would happen.
>>709623384
Look, simplifying the problem does no good if you can't defend your simplification.
The hula hoop example is only analogous to a situation where both portals are moving together.
>>709623271
The object would still appear out of the other portal the way i described it you fucking idiot.
>>709623541
Actually the orange portal would collapse in game
>Portals can't be placed on moving surfaces in game
>>709619765
The space that the cube is in is moving, not the cube itself.
It has no kinetic energy or inertia by the time its through thé portal.
>>709623541
No, In the game portals can't be placed on moving objects.
And when you remove that limitation you will find B is the correct answer through experimentation. I would post the webm of it, but cuckchan doesn't allow webms with sound.
>>709623271
It doesn't matter where the fuck those portals are going, the cube is sitting still on a platform. Before it's enveloped by the portal, it's sitting still on the platform. After the cube is enveloped by the portal, it is sitting still on the platform. Nothing has touched the cube to make it move so why would it?
>>709623509
You fucking retard, have ou ever heard of relativity? in an inertial frame of reference it's the relative velocity that matters. In both cases there is relative motion between the portal and cube, it doesn't matter which one is moving, but the fact that one is moving in relation to another.
again, go back to fucking school. this is basic 11th grade stuff, or even earlier
>>709619765
A
momentum conservation
The box has no momentum.
>>709623541
In real life the portal would act as a doorway for the block so it would not be moving when it exits the portal.
>>709623130
>>709623286
portals have 2 frames of reference. One at portal A ; and one at portal B.
>true the box isn't moving.
however portal A's reference is moving towards the box at say 60kph.
>Portal A hits the box
Instantaneously the box starts movement. where? movement relative to Portal B's Stationary frame of reference.
>for the length of the box it does travel at 60kph
if you have mass and length of the box's traverse, you can work out how far its gonna fly
>>709623715
If the cube were floating in mid air in a gravityless environment, what would happen in your opinion?
>>709623138
Where have you seen the box is moving ? The portal is. If I drop a frame over something it won't just magically jump because the speed at which the frame passed it.
Definitively mongoloid.
The earth is flat
>>709623721
Relativity doesn't matter though because nothing touches the cube anyways. It just sits there on the platform. When the portal comes down, the energy is released immediately into the platform and then all motion stops, nothing ever touched the cube to make it fly away.
>>709623809
So the box isn't moving here >>709621863 ? Are you mentally handicapped?
>>709623859
fuck off, A-fag.
>>709623721
Nigger I'm in school as a fucking physics major.
You just can't pretend that the block is being pushed up because it is moving in this situation. The portal is a fucking gateway it is just moving the block to a new location, the block won't just shoot up when it appears.
>>709623613
>>709623701
I know but I'm trying to give the people feverishly slamming their keyboard to make an argument about B some leeway.
>>709623802
Then it would float around and do nothing as it moves through the portal. I know what you're getting at but it isn't the cube moving it's the portal. As soon as the orange portal quits moving relative to the cube, the cube would stop moving relative to the portal. Now seeing as the portal stops, as would the cube.
The answer is A because portals are topological anomalies of dimensional space. In the event of OP's picture, what actually happens is that the universe folds itself around the object moving through the portal. It is the portal (i.e. the topology of reality) that is moving, not the cube. The portal is the only thing with "momentum" there, when it stops moving, everything remains in place. The confusion here comes from the fact that all perceivable real world examples of movement happen with objects moving in relation to one another, whereas in the portal example there is only one object, and the actual thing that is moving is the topology (i.e. the "coordinates") of space. There is therefore no relativistic transfer of momentum.
The entire cube would be enveloped by the portal before the energy of the "door" coming to a stop would have a chance to transfer its energy to it via sudden stop. The moment the cube is completely transferred, just before the stop, the cube would plop out like in A, like in the doorway analogy.
The answer would only be B if the cube was slightly recessed in its platform, allowing the "door" coming to a full stop giving the cube a bounce before it's completely through the portal.
In picture: A.
If the cube were on a recessed platform: B.
>>709619765
go back to twitter
>>709620015
look at the blue portal. clearly the cube is moving out of the portal.
Mass + moving = momentum
>>709624140
You know what I'm getting at and that's why you avoided the question.
If the cube were floating there and the orange portal slammed down on it and didn't stop moving until long after the cube was through the portal, would the cube "gain momentum" when it went through the portal?
If yes, would it then lose that momentum when the orange portal stopped moving?
>>709619929
Using the "doorframe" analogy though, you're not just moving the doorframe towards the cube, the doorframe is part of and leads into a house which also moves towards the cube.
So if the doorframe is moving relative to the cube, so is the house.
>>709623859
where is mook's pagoda located?
>>709619765
There isn't any force acting on the cube. Think of the portal as a hole, and you have an object on a table. If you slam the hole down onto the table, with the object in the middle, does the object suddenly jump up?
>>709624290
The only reason the cube appears to have momentum in A is because the portal is on a slope. It topples over/slides because of gravity.
>>709624681
With enough force it would. But that's irrelevant, it's still A, because the object is being teleported before an energy transfer can happen.
>>709619765
It's B because the orange portal is the relevant inertial reference frame. The momentum of the block relative to the orange portal is large and oriented toward the orange portal, so the answer is B.
>>709624681
No force is necessary when you're thinking with portals, and your analogy is shit and doesn't accurately represent the situation because one of the portals is not moving.
>>709619765
>all these posts only about movement
friendly reminder that portals are about teleportation
Let's say the cube weighs 10 kg and is 50 cm long. When the cube is halfway through the portal you have 5kg coming out of portal, in a very short span of time you will have 5kg of mass travel 25cm of distance. The cube must be pushed out of the blue portal because it is stationary, which creates momentum.
goddammit i'm so confused, i think it's A because of the door thing
>>709622530
Imagine this thing going up and down, is like fucking a portal with your entire body
>>709624691
who gives a fuck about the slope... its exiting a portal
>its exiting
>its moving
>it has momentum
unless you think its massless?
in which case A doesn't work, because gravity works on mass.
if the platform was smaller than the orange portal, and punched through with the cube, would you still say it wasn't moving?
>>709625116
I think the momentum will be canceled as your body enters the other side, cell by cell, electron by electron.
Otherwise your body would simply deatach on the not-yet-teleported half
BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB
>>709625318
>Otherwise your body would simply deatach on the not-yet-teleported half
why?
Goddamn you guys are some fucking nerds.
>>709625318
you thought wrong
it would be stretched... even been on a graviton
>>709625116
It doesn't have momentum. It's sitting still. Simply changing its position in space doesn't give it momentum. Your mistake is that you're assuming these portals automatically give an object momentum. We can't know for sure, since they don't (yet) exist, but I think common sense tells us that they don't, they only transfer the position.
And yes, if the platform was smaller, I would still say it's not moving. It's a change in position WITHOUT momentum. It would APPEAR to be moving, yes, but that's only an illusion because the "door" itself IS moving. The objecting being teleported is not.
It's not that hard to wrap your head around.
>>709621325
It would stay still on a diagonal surface? C'mon
The G-force is applied stright down in one side and down-right on the other, assuming the teleportation method is sending each particle of you individually.
But if it's just a hole in space time then I agree with you, however we don't know the teleportation method.
>>709625459
>Simply changing its position in space doesn't give it momentum.
thats literally momentum
>I would still say it's not moving.
nigga after its exited, it literally moving through space being pushed by another platform.
Im seriously glad global warming is happening... with all the room-temperature IQ's getting around... it will increase the global average IQ's
what would happen ?
>>709625742
this
>>709625459
>We can't know for sure
No we can. You're right about the explanation, but portals definitely conserve momentum.
>>709625742
same thing as would happen if you crushed the box in a hydraulic press.
>>709625742
The box would obviously crush itself
>>709625116
I think the platform pushed through the portal it would rip the whole universe through the portal, because it suddenly gains momentum, and the rest comming through too, getting more and more force behind the momentum.
>>709625942
maybe creating a black hole would be possible, assuming you can move the portals with little effort you could crush it into a microscopic thing.
>>709625862
No they don't.
Momentum is velocity*mass.
velocity is speed AND direction.
Portals can change the the direction of an object, and by doing so they change the momentum of an object.
By the way, wich kind of portal are we talking about, it has been proven that you can teleport small particles a long distance, it has been done. The other kind of portal would be the warp drive, bending space-time.
>>709623149
this is literally one of the dumbest responses
>>709626009
the gaining momentum would just be a typical force pulling (relatively) upwards on the pole before the orange portal. Nothing universe wrecking here.
>>709619765
"Momentum, a function of mass and velocity, is conserved between portals. In layman's terms, speedy thing goes in, speedy thing comes out."
Conversely: stationary thing goes in (by way of moving a portal around it), "stationary" thing comes out.
>>709619765
how does this stupid fucking bait thread actually still get replies
it's so blindingly obvious that this is just a frame of reference problem with no answer
how stupid do you actually have to be to not understand that kinetic energy is based on velocity and velocity is based on frame of reference? there's no right answer
WHAT WOULD HAPPEN ??
>>709625739
Says the guy who gets angry when discussing a concept.
Do you know what stupid people do when they can't win an argument? They get angry and yell louder.
That's what you're doing.
>>709626389
"stationary" thing comes out.
if its coming it, it aint stationary.
only the blue portal is stationary.
>>709626389
>Momentum, a function of mass and velocity, is conserved between portals
false. you can change the direction of an object using a portal.
>>709626398
nice bait kid
>>709626398
no stupid people make generalisations like you do
>>709623893
the other half of the cube is still in the orange portal its not moving retard
>>709621325
gravity you fucking idiot
Consider this:
There is another block, just outside the exit portal.
Now when the portal falls, and the companion cube is forced through the entry, and out the exit portal, it hits the block on the other side.
an object with 0 velocity has impacted an object with 0 velocity.
This is an impossible scenario, no? Unless a moving portal imparts its momentum to objects that go through it.
>>709626545
As you make a generalization yourself...
I had trouble figuring out what the fuck is even happening in the picture. Then I realized it was le Portal game, the gayest piece of shit Valve has ever made. Fuck Portal and fuck you.
>>709626398
dude he literally carved your comment into shreds
you contribute 0 back
and you call him stupid?
Pretty sure you are ignorant
>>709626562
If I take the cube and I compare its position half way through the portal with its position 1 second from then I would see no difference if the cube isn't moving.
But I do see a difference, so the cube is moving.
>>709626624
actually that is not a generalisation. At worst its an over exaggeration. Not too many people are clinically stupid.
/b
/b is always the answer, the answer to every question.
/b is also the question
/b is love, /b is life
WHTAR WOU9LD HAGPENN
>>709626398
>>709626662
ad hominem game is strong
>>709624585
But the house isn't moving, the other side of the door is.
Well, see, a cube that's not in motion won't be in motion just because spacetime is warping all around it and shit.
Basically, the cube is just sitting there. Why the fuck would it suddenly fly off?
It's not like the portal is pulling/pushing the cube. It's just a connection to the other place.
If you only look at the exiting part the cube will seem to be moving, but it's not. It's world is being moved.
The cube would emerge the portal at whatever speed the portal is coming down at it, but it wouldn't go anywhere since it has no momentum.
>>709627173
Imagine yourself in the position of the cube. Is the house moving towards you with the doorframe? Are the objects in the house getting closer to you?
Guys, look at the system from the frame of reference of the cube, then mentally move everything around that, a stationary cube. Its not even moving through space, it just is sitting there and then its on the other side of the portal. No energy is being supplied to it. The orange portal could be moving at 99% lightspeed and the cube wouldn't be any more (A). It would just appear in the other place faster, like lifting a cover off a dish faster.
>>709627307
>The cube has velocity but no momentum
it's not massless. Try again.
>>709627330
Sure, but once you're through the door everything would stop, and since I wasn't moving, so would I.
>>709627362
Portals don't follow normal rules, dumb dumb. It moves down the cube at whatever speed, making it emerge the other side at that speed. But no force was applied to the cube.
>>709627367
There is no reason for everything to stop.
>>709627417
The movement is only on one side of the door, the other side isn't actually moving, the door is just coming towards me.
>>709627057
It wouldn't fit all the way.
>>709619765
Neather it would stay on the serfice bc the gravity of the plane it's sitting is still relivent
>>709619765
it will plop.
>>709627447
This is precisely why the doorway analogy doesn't work. These mental gymnastics are insane.
>>709625742
The box would be stuck in an infinity-like pattern place
>>709627552
Only when they don't suit you. Nothing works, since this isn't real, it doesn't exist. One side of the door is moving, the other isn't. That can't exist in real life.
>>709626603
>Consider this:
>There is another block, just outside the exit portal.
>Now when the portal falls, and the companion cube is forced through the entry, and out the exit portal, it hits the block on the other side.
>an object with 0 velocity has impacted an object with 0 velocity.
>This is an impossible scenario, no? Unless a moving portal imparts its momentum to objects that go through it.
>>709627633
don't describe it as a door when it clearly doesn't work like a door. I've been saying this since the beginning of the thread.
>>709627655
Portals aren't real. They create paradoxes that can't exist in real life, but can in Portal world. In portal world 0 velocity objects can collide.
You guys realize that the cube isn't moving right? By virtue of it being a portal, space itself is moving around the cube.
Also, if you haven't played the game you are not allowed to post ITT because you haven't even see how they work.
>>709627682
I'm going off the analogy that was given to me. It works, it just doesn't work in real life. The door doesn't transfer momentum, space doesn't move around you when you move to the otherside.
>>709620523
Did someone really waste all that time writing that troll article. Take a board cut a hole in it drop it around a box, when the board hits the ground does the box fly into the air? No.
>>709621932
The portals would have sorce gravity as well.
>>709627741
portals do transfer momentum.
>>709627727
People try and apply real world logic to it. Not getting that it moves towards you, the other side is completely still.
>>709627751
There's a video above that addresses your troll explanation already.
>>709627787
Nope. Only when the object has momentum. Portals can't exist on moving surfaces anyway, so you're just guessing there.
>>709619765
It would emerge the portal at whatever speed it was being swallowed at and then plop down, since space has stopped moving around it.
>>709619765
The portal doesnt apply a force to the cube. The cube keeps the momentum it alread has (none). Its not difficult to understand unless you are retarded like OP
>>709627843
Everything is a moving surface.
If a space object that was standing still while the earth moved towards it entered a portal, would the object gain momentum if the portals were facing the right direction?
Yes, it would.
>>709627995
>everything is a moving surface
Lol, that is an ass pull if I've ever seen one. You'd know you can't places portals on moving surfaces if you've played the game. It would have velocity but no momentum and it would lose that velocity the moment it fully emerged from the portal.
>>709621932
>gravity pulling the cube to the table is almost non-existent
>gravity pulling the cube down the ramp is stronger.
>>709628119
The earth isn't stationary.
>>709628246
Is that all you have now?
>>709628246
Also, using that logic, how come in the game you don't shoot out the other side of the portal at 465 metres a second?
>>709621940
> Conservation of momentum between two things that aren't in contact with each other.
>>709628396
because B is the correct answer, not A.
>>709627995
>would the object gain momentum
No... it wouldn't. It would just suddenly exist somehwere else. Do you realize how spacetime and portals work?
>>709628411
>calls relativity "conservation of momentum"
lol
>>709628454
If it was B, you'd fly through every portal with the speed the earth is rotating. It's A, chump.
>>709628396
Because both portals are moving at the same speed and direction
>>709628506
What if they're different directions?
>>709628502
No if it was A you'd fly through every portal at the speed the earth is rotating. It's B, chump.
>>709628549
Then you get results like answer b
>>709628587
Exactly, and because it doesn't actually work like that, it's A.
>>709628582
Perfect! You get it now. Since it doesn't actually work like that, it can only be A.
>>709628612
Exactly. And because they are moving in different relative directions it's b
what would happen if you went though this portal weeaboos?
>>709628715
Nope, since only one side is moving sadly.
>>709628764
>relative
Key word
>>709628658
>my solution isn't correct when portals do X
>therefore they don't do X
ha
>>709628807
They don't though. :^)
>>709628866
>posting the smiley with the caret nose
>>709628908
>yes
>>709628908
> snowman
Same level of intelligence
>>709628932
>who are you quoting
:^)
>>709628908
caret
>>709628995
Who are you?
No point in this thread one anon made a webm last time proving it was b in game
>>709629006
that's what it's called yes
>>709629027
Who?
>>709629027
What do you want
>this again?
A
>>709629179
Why are you here
>>709619765
you fucktards dont understand anything do ya.
its about inertia, the cube has none because the only forces that are acting on the cube are gravity (cube on platform) and the normal force (platform on cube) so it stands still so there's no inertia, which means that the platform with the orange portal wont apply any force whatsoever.
>>709629369
force is applied because the cube exits a fixed portal
how does it exit the portal if it doesnt move?
lol...
>>709629369
Portals can change the direction of momentum without applying a force, so no, it's not about inertia.
A
>>709629369
Then how does it move air out of the way as it emerged Nd begins to take up space?
If it has no inertia or momentum the atmosphere should behave as a solid
What now?
You know how if you want to go fast thru a portal, you have to be going fast when you enter?
Speedy thing goes in, speedy thing comes out.
Not-speedy thing goes in, not-speedy thing comes out.
>>709619765
It is A because portals such as this is more like a window rather than the matter sort of teleporting bit by bit through the portal there is just a space there. There is not a speed in which it comes out the other side, its instant. You have to just imagine that the blue portal is on the back of the orange one because it effectively is its just in a different place if that makes sense. Its the equivalent of a frame or something passing over it but one side of the frame is in a different place
>>709629435
well fuck...
>>709629812
the spike will do nothing because there is no force acting on the person hurr
>>709629812
Apparently it doesn't Have momentum thanks to the people that say a
No worries
>>709629828
OH NO
>>709629435
This is not portal
Therefore A
>>709629812
A or B, that bitch getting a knife.
This isn't flat earth bullshit, this is four-dimensional physics. Short version, the box's location is changing, but it isn't moving, because there is no force being exerted on it. B advocates are confusing perspective with actual motion.
>>709629828
>>709629435
>>709629278
sorry troll youve already been shut down
>>709629968
sorry but the cube is in motion when it exits the portal
why do you think it would slow down?
A
>>709629278
Yes but its the portal that is moving and not the cube. Your need to imagine the portal as a window rather than matter goes in one place and comes out the other, the 2 places are connected, all that happens is the portal moves over the cube. The blue portal isn't a separate entity to the orange one, they are both the same thing
>>709629968
Moving: The act of changing one's location
lol
>>709629828
yeah, but in your exemple, the blue moves too
nigger
>>709629970
How, hes wrong
>>709619765
Y'all do know that moving a portal collapses it right? Haven't any of you ever played the game?
>>709628465
This is four-dimensional physics, analogous to a wormhole. Let me put it this way: you are running at a box in a blank void, creating the impression that the box is moving towards you at the speed you are moving. You pass the box and come to a stop. Will the box have A: stayed right where it was or B: gone flying off into the distance?
>>709630129
It effectively does because the orange portal is on the other side
>>709627057
It would start to go in and half way would block it self.
>>709630222
DID YOU KNOW YOU CANT ACTUALLY MAKE PORTALS IN REAL LIFE
HAHAHA
HAHAHA
LOOK AT ME HAHA IM UNIQUE
welcome to the internet you fuckin 12 year old
>>709629413
a portal has a length, a height but has no width (or at least lim 0.) so lets just say that the box wont get stuck in the portal.
there is no force applied. its just that when the box exits the portal, theres new forces on the cube. that makes it tilt.
you can always try this at home. put a coin at the palm of your hand and put your hand in a table, get a glass of water and put it upside down and act like as if the portal were the border of that glass cup. does the coin lift up a bit? no.
it doesn't matter how fast the portal above the cube is moving. the cube itself would teleport at the same rate without any pressure. B would be the answer if the cube was in freefall and the red portal was below as it would carry in the same direction but in order for the entire cube to even begin to move through when it emerges from the blue portal the piston with the red portal would have to be flush with black platform. imagine the blue portal facing upwards instead of a slant. if the portal just came straight down the cube wouldn't have any upward momentum to make it onto the floor. It would be suspended in place between the two portals.
>>709630337
not even guna read your pathetic attempt at word salad
the cube cannot exit the portal slower then it enters it
sorry if you dont understand this
sorry if you waste ur time thinking ur being cheeky and "trolling"
>>709630124
And whatever goes through a window exits the outer frame at the same speed it passed through the inner frame.
>>709630124
>Your need to imagine the portal as a window
ohhhh you dont understand at all...
>>709629527
portals dont do shit, portals will never change the momentum damnit, you always bring the momentum from before entering the portal, the moment when you step from the portal new forces apply on you because you are somewhere else, pointing somewhere else.
when will people realize it. portals have length and height but have no width.
>>709630416
But the cube isn't entering the portal, the portal is passing the cube. That's not even a troll, it's the key to thw whole thing.
>>709630424
Correct, but that doesn't give it any momentum, that only effects the speed in which it appears at the other side
>>709630424
Speed of box is 0.
>>709629828
dont worry son, we are the few who know it.
A
>>709630464
I don't think you understand it, portals (in this case from the game) don't get matter and then move it somewhere else, it creates a "window" between the 2 places
>>709630538
sorry but one end is moving one isnt
its not a window
and ur stupid as fuck if you really think this
please chop ur nuts and save future hitler the trouble of cleansing ur grandchildren
the cube gains no momentum from the portal since it doesnt make any contact with it, therefore no momentum from the portal goes to the block.
Its A.
People who think its B have no understanding of momentum and impulse
>>709629876
in this case it has momentum due to his own weight and gravity.
2/10 for making me reply.
>>709630552
>>709630552
>Passed through inner frame at a set distance/time
>exits outer frame at same rate then immediately stops.
Explain how it moves the air out of the way in order to emerge if it has no force
You have no idea how physics work if you actually think it's B
it's B
can be used as a fan too
>>709630128
Yes, according to physics that don't accept the possibility of portals. A portal literally allows changing location without actually moving. That's the whole fucking point about portals and teleportation.
>>709630551
So you admit it appears at speed, but claim it has no momentum
who you gonna call...mythbusters?
>>709630519
An object has a different momentum going into a portal and coming out of a portal.
The momentum changed as a direct result of going through the portal.
In other words, the portal changed it's momentum.
>>709630666
Satan teaches 4th dimensional physics.
>>709630552
Speed=distance/time
That is a measurable thing in this situation
>>709630760
Correct, the portal is passing over the cube at speed but the cube has no speed its self
The portal moving doesnt affect the movement of the cube. It only affects the rate at which it portals through the portal
>>709630755
By definition that is impossible. Changing location without moving is a direct contradiction with the definition of moving.
>>709630416
>hurr durr i see your point but i'm here to troll so i'll say HAHA didnt read and i'll project my shit towards you.
well done sir. best troll since 9/11
>>709630738
the wind is moving, the box is not.
this thread goes faster than the cube...all i know
>>709630883
the wind isn't moving, but it starts to move at the speed the blue portal was moving, when it comes out of the orange one
>>709630826
And then it exits at the same rate it entered relative to the frame.
>>709630698
Thats why they dont let you fire moving portals freely; they never figured that part out, or how to code it proper.
We in 3 dimensions can move up/down, left/right, forward/back, but the 4th dimension is a direction we can't describe.
Yet.
Speed of the cube is 0m/s when it enters the portal
Speed of the cube doesn't change when it travels through the portal.
>>709630826
Does the position of the box change relative to the blue portal? Is the blue portal stationary?
If yes to both then the box MUST have speed.
>>709619765
http://9gag.com/gag/aRA0by5/you-can-t-make-moving-portals-in-portal-2-so-i-made-this-improvised-experiment-in-gmod-and-the-answer-is-b
b - relativity of movement. When portal moves, its not, that a window frame moves - its the entire reality moving relative to cube
>>709630956
you're implying wind in OP image. your brain put that there, it's not measurable in the exercise.
>>709630538
im the guy that wrote the glass and the coin example.
i'm laughing off because of these guys. just because if it's a troll, it is reminding me of the latest episodes of south park and i'm picturing them, and if it's legit, well damn they are actually stupid. either way its a win/win situation for me.
>>709630863
>Changing location without moving is a direct contradiction with the definition of moving
Indeed, but what I'm saying is that shouldn't matter because portals defy physics.
In a universe with the ability to use such portals, definitions of moving would have to be different.
>>709630989
It isn't entering and exiting with any speed, the portal is passing over the cube. Also both sides are the same, they aren't separate.
>>709630666
>>709630661
>>709630828
>>709631124
momentum is gained because the cube is forced to exit the portal at whatever speed the entry aperature is moving
sorry maybe next time
>>709631002
they didnt because they were too lazy and because it would add way more work to make the game...
not because they were being trolled by people posting A with gifs
>>709630661
Well, Hitler wanted to kill Einstien, too, and he'd back me up. The location of the box is changing without it moving, akin to teleportation.
>>709631017
>gag
>>709619765
depends if it works like a hole or if it works like teleporting atoms building one at a time at B
>>709631011
The blue portal is technically moving though, its on the back side of the orange portal, and anyways i'm pretty sure portals cant move in the first place so this whole thing is pointless
>>709631035
yea, but the box does the same as the wind
and i think it's easier to think about it with the wind
>>709631242
is the platform that the blue portal is on moving? Is the cube moving relative to the platform that the blue portal is on?
>>709631204
would it make u feel better, f i posted the gif separately?
take your feelings somewhere else, blm sjw nig
>>709631200
LOL
its sad how fuckin stupid you have to pretend to be to still want to troll
this explains why your wrong (you know the fake you your pretending to be for "THE LULS LOL XDDD")
>>709629278
>>709626389
This. And anyone who says otherwise is part of the Rebel Alliance and a traitor.
A is correct when the top piston has motion, B is correct only when and if the bottom piston has motion. In the illustrated scenario, A would be true.
A
>>709631124
>Passing through and exiting at a rate of distance over a time period.
>Has no speed
If you can't grasp relativity I'm not surprised you dont understand
>>709620363
B would only be able to work in a situation where the platform ALSO went through the portal, as the platform wiuld then act as a piston and apply force to the cube. On its own the cube has no force and would continue to have no force and be unable to move, where as if the platform ALSO went through the platform would not have any innate force, but the movement of the portal would allow it the to simulate force and add velocity to the cube.
An object in rest stays at rest, an object in motion stays in motion.
>>709631391
this only works when both portals are fixed
obviously if one is moving...
LOL
>>709631394
how does the cube exit the portal if it doesnt move relative to the exit portals?
speedy thing goes in
SPEEDY THING NEVER COMES OUT BECAUSE ITS NOT FUCKIN MOVING
>>709631267
there's no friction there. the box wouldn't fly upwards. in this image the portal platform hitting your arm wouldn't cause the box to move at all. assuming you maintained balance it would continue to rest on your hand. there is no friction or pressure created by the faces of the portal. and If you just held your hand there, the box wouldn't just begin to float upwards. it's simply in one place and then in another.
>>709631377
It doesn't matter about the platform in which the blue portal is on because its a portal, its simultaneously on 2 platforms at once because the blue and the orange are the same portal
>>709631446
unless its squeezed out a portal
man ur smart.
>>709631442
Relativity isn't taking portals into account you idiot
Inertia is a property of matter. Cube doesn't have any. A. shuddup.
>>709631574
It wasn't "squeezed out" of anything. The box didn't move. From the boxes perspective it didn't go through anything, the portal mearly went around it.
>>709631624
ye, ye
>>709631547
shhhh, u wrong, shhhhh
>>709631621
Yes it does.
If a car hits me at 10 mph, It's the same effect as me running I to the car at 10 mph
If the portal.mover over the cube at 10mph the cube will exit the other portal at 10mph.
It has to because that's the rate it entered regardless of whether it was moving or the portal was
It's not about the cube having speed or momentum, it's about exiting at the same rate that it entered
>>709630779
ok ill give you an example since you aren't getting it, if we were in deep space, and we had no gravity whatsoever, if you throw a box into a portal that is above you, the box would get out of the portal and keep going without any difference whatsoever, that's because the portal doesnt change shit. there's a saying. its "you have to think in portals" and it's for some reason, you are thinking about space, not about the portal itself.
>>709631847
hahaha where did the gravity go?
draw me a breakfast burrito pls
>>709631851
>If a car hits me at 10 mph, It's the same effect as me running I to the car at 10 mph
ok you know this is like way way way wrong right?
>>709631851
>If a car hits me at 10 mph, It's the same effect as me running I to the car at 10 mph
do you weigh as much as a car?
if not this is natural selection at work.
>>709631851
No its will come out of the portal at 10mph but it will not have any momentum, nothing is pushing it though. idk, its not like this shit matters for fuck sakes im done here
>>709632017
He's right.
Force = Mass * Acceleration
M Car = 3000 pounds
M Person = 180 pounds
>>709631851
If little retarded jimmy runs into a car at 10mph, he bounces off because he is a light little child.
If a car runs into jimmy at 10mph, it might break a bone because the car is a heavy steel machine.
>>709632157
Of.course not, so the car will not move at all, where as it hit me I would.
The damage to myself will be very similar
>>709619765
The answer is A, but not for the reason you believe.
The distance between the cube and the platform it rests on is 0 - from the bottom of the cube, it is one atom's distance until the next piece of mass, which is the platform.
From the point where the first atoms pass through the portal, the cube as a complete object is fixed in space as it existed at that time. Only after the cube's final piece of mass goes through the portal does it inherit its physical properties in the new relative dimension.
Here's the trick: as the portal reaches the cube's bottom-most layer of atoms, it's deceleration is at its maximum rate which produces the greatest negative force during the perfectly inelastic collision.
The cube goes through the portal with the inherited physics of +(positive)RateOfPortalMovement. BUT! The portal that "contains" the "new dimension" the cube enters is moving at a rate of -(negative)RateOfPortalMovement when the cube was unsuspended from its limbo state between portals.
Stretch your simpleton minds with the following comparison: If I take a step forward at the same time and speed as the ground traverses in the same direction, I end up in my original position despite the force I exerted.
---|O| denotes moving portal on surface
l::l denotes cube
|=== denotes platform
1) Portal (|O|) relative to cube (l::l)
-->-10m/s--> --|O| --> l::l|===
2) Cube (l::l) relative to portal (|O|)
----|O| <--+10m/s<--l::l|====
3) Cube velocity relative to portal in "transdimensional"/between portal state
-->-10m/s-->--|O|l: --0m/s-- (LIMBO) --0m/s--:l<--+10m/s<--|====
From this, any capable human being can conclude the solution is A.
>>709619765
It's neither A or B you faggots.
Imagine the portal as a cilinder big enough to fit the little cube in. When the cilinder drops over the cube the cube stays stationairy merely trapping it and nothing more.
Now portal 2 is on a slope but it's still a hole so there's nothing for the cube to slide off from so it'll just drop back through the portal.
So as long as the first portal stays over the cube, the cube will drop back and forth between the 2 portals.
>TL;dr
You guys are all fucking stupid
>>709632197
>It will come out at 10mph but has no momentum.
Exiting at 10mph gives it momentum.
The momentum of the moving portal is translated to the cube
>>709632240
Doesn't matter if trolling, because many people think this way.
>>709622724
Reading comprehension.
