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Achild bounces a 48 g superball on the sidewalk. the velocity change of the superball is from 26 m/s downward to 17 m/s upward. if the contact time with the sidewalk is 1 800 s, what is the magnitude of the average force exerted on the superball by the sidewalk? answer in units of n.
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Achild bounces a 48 g superball on the sidewalk. the velocity change of the superball is from 26 m/s...
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