What is the equation in solving for momentum?

Answer 1

That would probably depend on the specific situation; there are several equations that involve momentum. Two important equations are:

1) Conservation of momentum:

m2 = m1 (i.e., total momentum after some event, such as an impact, is the same as total momentum before the event)

2) The definition of momentum:

p = mv (momentum, which is usually written as "p", is mass times velocity)

cw: Impulse (Force X time) is equal to the change in momentum.