What is the kinetic energy in joules of this baseball when it isthrown by a major-league pitcher at 94.0mph?

By what factor will the kinetic energy change if the speed of thebaseball is decreased to 55 mph?

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Jarrod RobelLv2

27 Aug 2019

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Related questions

(a) 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? (b) By what factor will the kinetic energy change if the speed of the baseball is decreased to 55.0 mi/h? (c) What happens to the kinetic energy when the baseball is caught by the catcher?

b) Since the energy depends on the square of speed, the energy will decrease by factor:

c) When catcher catches the ball, kinetic energy drops to zero because of collision with catcher’s hand.