As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 19.5 m/s. In the process, he moves his hand through a distance of 1.40 m. If the ball has a mass of 0.150 kg, find the force he exerts on the ball to give it this upward speed.

Question
Asked Nov 3, 2019

As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 19.5 m/s. In the process, he moves his hand through a distance of 1.40 m. If the ball has a mass of 0.150 kg, find the force he exerts on the ball to give it this upward speed.

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Step 1

the work done is equal to the kinetic e...

1
mv
(F- mg) d
2
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1 mv (F- mg) d 2

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