11. Momentum & Impulse
Completely Inelastic Collisions
Problem 9.42a
Textbook Question
Textbook Question(II) A 144-g baseball moving 28.0 m/s strikes a stationary 4.85-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 1.10 m/s.
(a) What is the baseball’s speed after the collision?
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