Question

A ball with a mass of `6 kg` and velocity of `4 m/s` collides with a second ball with a mass of `3 kg` and velocity of `- 2 m/s`. If `75%` of the kinetic energy is lost, what are the final velocities of the balls?

Answer 1

See below.

Explanation:

See a very similar problem worked out here.

Please feel free to ask if you have any remaining questions :)