>>509280279
We are not really talking about physics, but more about what is logically consistent with the set of rules defined as the in-game rules with the addendum of portals being allowed to have velocity relative to the earth. It just so happens that this game simulates several realistic physical phenomena. Any good argument does not draw from any axioms not given in-game, apart from our addendum.

You are the biggest fucking midwit I have seen in a long time.

>>509280329
Then show how what I said is logically inconsistent.

>>509280347
Again, momentum is velocity times a constant, that constant being mass. This means that velocity DIRECTLY determines momentum for such a mass invariant system.

Velocity is conserved for whichever systems momentum and mass are conserved. Mass are conserved for all systems present, yet momentum is on conserved from the portal's reference frame, meaning that velocity is conserved only from the portal's reference frame.

>>509280511
>Momentum is mass times acceleration.
That's force you're thinking of. Take 30 seconds to google it.
You know what, here you go:
https://en.wikipedia.org/wiki/Force

And you were saying I didn't understand the terms I was using, lol.