I believe it should be A. People aren't moving, and the portal doesn't carry momentum. At most people would be appearing on the other side with very little delay between eachother resulting in the most recently teleported person violently pushing away the last one.

[–] meekah@lemmy.world 9 points 1 year ago (2 children)

Of course the yellow/orange portal carries momentum. That's why it should be B.

[–] rog@lemmy.one 12 points 1 year ago (1 children)

Its just a hole though. If you have a tennis racket with no strings and swing it over something stationary the object doesnt move

[–] meekah@lemmy.world 16 points 1 year ago

With the tennis racket analogy both portals would be moving. In the thought experiment from the image just one is moving, resulting in an unaccounted for momentum, unless the people shoot out the blue portal

[–] PsychedSy@sh.itjust.works 1 points 1 year ago

I think it'd be B. It has to exit the portal at the speed it entered or you end up with a scunched up human or a stretched out human.