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natali 33 [55]
3 years ago
9

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

n 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.
Physics
1 answer:
sleet_krkn [62]3 years ago
4 0

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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