Question

A baseball with a mass of 152 g is thrown horizontally with a speed of 40.7 m/s (91 mi/h) at a bat. The ball is in contact with the bat for 1.15 ms and then travels straight back at a speed of 45.0 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.) Can you write an expression for the average force exerted on the ball in terms of its change in momentum and the time the force acts? Can you write and expression for the change in momentum? Pay careful attention to the sign convention suggested in the statement of the problem. N Supporting Materials Physical Constants Additional Materials Reading Submt Answer

Answer 1

force exerted

F = m ( - v - u) / t

F = 0.152 * ( - 45 - 40.7) / (1.15* 10^-3)

F = - 11300. 87 N

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