Answer:
White hole is an impossible object in universe. ... This means that in a hypothetical universe where there is a black and a white hole, in a short time after their first interaction the white hole will become another black hole so that the system will end up with two black holes.
Answer: Final speed
Explaination: because its final.
A theory can help create a model
I’m pretty sure it’s c.... hope it helps and hope it’s right.