In a Little League baseball game, the 145 g ball enters the strike zone with a s

Question

In a Little League baseball game, the 145 g ball enters the strike zone with a speed of 16.0 m/s .The batter hits the ball, and it leaves his bat with a speed of 22.0 m/s in exactly the opposite direction.

What is the magnitude of the impulse delivered by the bat to the ball?

Express your answer to three significant figures and include the appropriate units.

If the bat is in contact with the ball for 1.1 ms , what is the magnitude of the average force exerted by the bat on the ball?

Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

impulse = change in momentum

impulse = 0.145*(16+22) = 5.51 kg m/sec

impilse = force*time

force = impulse/time = 5.51/1.1*10^-3 = 5009.09 N

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