A baseball ( m = 145 g) traveling40 m/s moves a fielder\'s glove backward30 cm w

Question

A baseball (m = 145 g) traveling40 m/s moves a fielder's glove backward30 cm when the ball is caught. What wasthe average force exerted by the ball on the glove?
Magnitude
1 N
Direction 2 in thedirection opposite to the ball's motion in thedirection of the ball's motion    perpendicular to the 2 in thedirection opposite to the ball's motion in thedirection of the ball's motion    perpendicular to the 2 in thedirection opposite to the ball's motion in thedirection of the ball's motion    perpendicular to the 2

Explanation / Answer

m = 145g = 0 .145 kg s = 30 cm = 0.30 m According to conservation of energy we have      1/2mv2= Fs       1/2(0.145 kg)(40 m/s)2= F(0.30 m)                  F = 386.66 N The kinetic energy ofthe moving baseball goes into the work it takes to move the glovebackward. in the direction of theball's

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