Problem: A baseball weighs 5.13 oz. What is the kinetic energy, in joules, of this baseball when it is thrown by a major league pitcher at 95.0 mi/ h?By what factor will the kinetic energy change if the speed of the baseball is decreased to 67.2 mi/h?

FREE Expert Solution

Kinetic energy:

KE=12mv2


v1 = 95 mi/h

v2 = 67.2 mi/h

mass remains the same: compare the factor v2 in the equation:

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Problem Details

A baseball weighs 5.13 oz. What is the kinetic energy, in joules, of this baseball when it is thrown by a major league pitcher at 95.0 mi/ h?

By what factor will the kinetic energy change if the speed of the baseball is decreased to 67.2 mi/h?

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