Estimate the average force that a major-league pitcher exerts on the baseball when he throws a fastball. Assume the ball moves in a straight

Question

Estimate the average force that a major-league pitcher exerts on the baseball when he throws a fastball. Assume the ball moves in a straight horizontal line with constant acceleration during the pitch. The distance the pitcher moves the ball during a pitch is about twice his arm length, which is about 3.0 ft. The baseball has a mass of 0.010 slugs and it is pitched with a speed of 92 mph.

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Philomena 4 years 2021-08-16T21:34:01+00:00 1 Answers 47 views 0

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  1. RobertKer
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    2021-08-16T21:35:41+00:00
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    Answer:

    F = 15 lbf

    Explanation:

    92 mph (5280 ft/mi) / (3600 s/hr) = 135 ft/s

    The work done on the ball changes its kinetic energy

    Fd = ½m(vf² – vi²)

    vi = 0

    F = mvf²/2d

    F = 0.010(135²) / 2(2(3.0))

    F = 15.1725

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