In t-ball, young players use a bat to hit a stationary ball off a stand. The 140

Question

In t-ball, young players use a bat to hit a stationary ball off a stand. The 140 g ball has about the same mass as a baseball, but it is larger and softer. In one hit, the ball leaves the bat at 12m/s after being in contact with the bat for 2.0ms . Assume constant acceleration during the hit.

A)

What is the acceleration of the ball?

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

B)

What is the net force on the ball during the hit?

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

Explanation / Answer

a) acceleration = rate of change of velocity = dv/dt

=> a = (12 - 0) / 2x10^(-3) = 6.0 x 10^3 m/s^2

b) Force, F = ma = 0.140 x 6.0 x 10^3

=> F = 840 N

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