Stopping a Baseball: Work, Force and Calculation

AI Thread Summary
To stop a baseball weighing 0.146 kg traveling at 40 m/s, 116.8 joules of work must be done. The average force required to bring the ball to rest over a distance of 2 cm is calculated using the work-energy principle. By rearranging the work formula, the average force is determined to be approximately 5.48 kN. This calculation emphasizes the relationship between work, force, and distance in stopping a moving object. Understanding these concepts is crucial for solving similar physics problems.
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Homework Statement


Suppose a .146 kg baseball is traveling at 40 m/s.

a.How much work must be done on the ball to stop it? answer 116.8 J

b. if it is brought to rest in 2 cm what average force must act on the ball?

Homework Equations


KE=(1/2)mv^2

The Attempt at a Solution



w=Favg(.02m)
116.8=Favg (.02m)
Favg=116.8(N/m)/.02(m)

5840N/1000=5.48 kN
 
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