Magnitude of the average force applied by the ball
A 0.160-{rm kg} baseball traveling 30.0 m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 15.0 cm.What was the magnitude of the average force applied by the ball on the glove?
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Identify the positive and the negative of the bail system?
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What is the diameter of the disk of the Milky Way?
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