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March 29, 2017

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A 0.140-kg baseball traveling 38.0m/s strikes the catcher's mitt, which, in bringing the ball to rest, recoils backward 15.0cm .What was the average force applied by the ball on the glove?

  • Physical - ,

    change of momentum = .14 * 38

    average speed during stop = 38/2 = 19
    time to stop = t =.15/19 = .00789 seconds

    F = change in momentum/time = .14*38/.00789

    = 674 Newtons
    (ouch)

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