lauthals

Talking about Arsène’s Arsenal - you certainly don’t know about (and honestly, why should you) the German coach Wolfgang Wolf managing Wolfsburg around 2000.

Do we agree that the massive block with the blue portal is not moving? So, imagine we are standing right in front of it when it happens - what happens exactly? How do the people appear?

So, how would the people come out of the portal without movement?

To make it clear from the start: I agree 100% with B - there has to be movement, because without it, people wouldn’t come out of the portal at all. And if there is a movement, then the only reasonable speed would be that of the train.

But: Your question about the energy is still interesting. It must come from somewhere. And I think, the only source, from which it can come, is the train. That is, the train would lose energy and therefore slow down.