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A baseball with a mass of 140 g is thrown horizontally with a speed of 39.8...

A baseball with a mass of 140 g is thrown horizontally with a speed of 39.8 m/s (89 mi/h) at a bat. The ball is in contact with the bat for 1.15 msand then travels straight back at a speed of 45.2 m/s (101 mi/h). Determine the average force (in N) exerted on the ball by the bat. Neglect the weight of the ball (it is much smaller than the force of the bat) and choose the direction of the incoming ball to be positive. (Indicate the direction with the sign of your answer.)
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