Question: A cue ball, which has a mass of 170 g, collides head-on with a stationary 8-ball, which has a mass of 160 g. The 8-ball then takes off at 120 cm/s. Assuming the collision was elastic,
Part A: What was the velocity of the cue ball before and after collision?
I need help to find the velocity of the cue ball before and after collision.