Elastic and Inelastic Collisions – Practice


1) A 150gm red pool ball is hit north at 0.8 m/s and collides with a larger 180gm blue pool ball moving south at 1.2 m/s. The red pool ball ends up moving south at 1 m/s after the collision and the blue pool ball moves north at 0.5 m/s. Determine if this is an elastic collision:


Quick Answers:

1) KEi = 0.1776 J and KEf = 0.0976 J. Collision is not elastic

Worked Answers: