Question

is alaways conserved in a collision​

Answer 1

Answer:

Momentum is conserved, because the total momentum of both objects before and after the collision is the same. However, kinetic energy is not conserved. ... In an elastic collision, both momentum and kinetic energy are conserved.

Answer 2

Answer:

Collisions.

Explanation:

In collisions between two isolated objects Newton's third law implies that momentum is always conserved. In collisions, it is assumed that the colliding objects interact for such a short time, that the impulse due to external forces is negligible.