A billiard ball (Ball #1)moving at 5.00 m/s strikes a stationary ball (Ball #2)of the same mass.After the elastic collision,Ball #1 moves at a speed of 3.50 m/s.Find the speed of Ball #2 after the collision.
A) 1.25 m/s
B) 1.50 m/s
C) 2.16 m/s
D) 3.57 m/s

Question

Quizplus · Accepted Answer

In an elastic collision with equal masses, the relative speed of separation equals the relative speed of approach. Therefore, Ball #2 moves at 3.57 m/s after the collision.

A Billiard Ball (Ball #1)moving at 5