Question

Two identical balls A and B collides head on elastically. If velocities of A and B were 0.1 m/s and -0.2 m/s respectively, then their velocities after the collision are respectively​

Answer 1

Explanation:

When identical balls collide elastically they just exchange their SPEEDS and get reversed.

This can be verified by applying the momentum conservation and energy conservation, yes energy remains conserved for elastic collisions.

so the exchanged velocities will be following

v1 =0.3m/s and

v2 =−0.5m/s