Unfortunately, this isn't testable in Portal because portals can't be affixed to moving surfaces.

I would assume the people just plop out fine since they would retain their momentum (which is nil), and the portal's own momentum wouldn't be applied to them. But God damn it I wish I could just make a Portal map with a moving portal and see.

There's a reason why in the game you could never put a portal on a moving surface

B.

Speedy thing goes in. Speedy thing comes out.

Although it kind of depends how fast the tram is going.

B) The train transfers momentum to the things that pass through the portal. If it wouldn't, the portal couldn't exist since you need a certain amount of energy to displace the air on the other end.

A if the trolley is going slow

B if the trolley is going fast.

there's a video with a great explaination about this: https://youtu.be/B19nlhbA7-E

Can someone put this in a lambda function for me so I can kill myself trying to figure it out?

This platform deserves a community solely dedicated to trolley memes.

Dont they need to be hovering mid air for either to happen? I am trying to imagine how would a moving portal teleport a person laying down without teleporting the ground beneath him. I think neither a or b would happen, I think they would be draggen on the ground and splattered, but if I HAVE to choose, I say A is more likely. Because they are laying and not hovering I dont think they will be launched.

This is my favorite post in a while.