As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 17.5 m/s. In the process, he moves his hand through a distance of 1.45 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.
As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 17.5 m/s. In the process, he moves his hand through a distance of 1.45 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.
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter11: Collisions
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Problem 20PQ: A skater of mass 45.0 kg standing on ice throws a stone of mass 7.65 kg with a speed of 20.9 m/s in...
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As a protest against the umpire's calls, a baseball pitcher throws a ball straight up into the air at a speed of 17.5 m/s. In the process, he moves his hand through a distance of 1.45 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.
Expert Solution
Step 1
The forces on the ball along the vertical direction will be :
- The force exerted by the pitcher, F upwards.
- The gravitational force, mg downwards.
Step 2
The work done on the ball due to the resultant force will be
= Resultant force x Distance for which the force is applied
=(F-mg) x d
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