A 144-g cricket ball moving 28.0 m/s strikes a stationary 5.25-kg brick resting on small rollers so it moves without significant friction. After hitting the brick, the cricket ball bounces straight back, and the brick moves forward at 1.10 m/s.
(a) What is the cricket ball's speed after the collision?
(b) Find the total kinetic energy before and after the collision.