Momentum in a collision.

Question

How is momentum conserved in a collision?

 

Explain using words, calculations, or both as well as physics terms.

Answer 1

The law of conservation of momentum states that momentum is conserved. 

This is expressed as (m1)(v1i) + (m2)(v2i) = (m1)(v1f) + (m2)(v2f).

So in any elastic collision the momentum is conserved the only change is in the velocity of the two masses.