Question

I have a short question, please answer me:)

Answer 1

is it true that if momentum is conserved, the energy is then also conserved?

Answer 2

I think I got the answer to my question.

Kinetic and Potential energy one by one can be lost or gained, but the TOTAL energy tho' remains constant (on the assumption that momentum is conserved).

Answer 3

but I got another question though'

Answer 4

yea

Answer 5

with conservation of momentum (and thus the conservation of total energy), would the mass be conserved as well?

Answer 6

yes

Answer 7

i thank