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A baseball (m = 145 g) approaches a bat horizontally ata speed of 40.9 m/s (91.5 mi/h) and is hit straight back at a speedof 51.7 m/s (116 mi/h). If the ball is in contact with the bat fora time of 1.44 ms, what is the average force exerted on the ball bythe bat? Neglect the weight of the bat, since it is so much lessthan the force of the bat. Choose the direction of the incoming ball as the positive direction.

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