A 144-g baseball moving strikes a stationary 5.25-kg brick
Chapter 7, Problem 41(choose chapter or problem)
A 144-g baseball moving strikes a stationary 5.25-kg brick resting on small rollers so it moves without significant friction. After hitting the brick, the baseball bounces straight back, and the brick moves forward at (a) What is the baseballs speed after the collision? (b) Find the total kinetic energy before and after the collision
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