A Baseball of Mass M, Initially at Rest, Is Struck

question 57

Multiple Choice

A baseball of mass m, initially at rest, is struck by a bat so that it acquires a speed v. If t represents the duration of the collision between the bat and the ball, which one of the following expressions determines the magnitude of the average force exerted on the ball?

• A)(1/2)mv²
• B)mv/t
• C)(1/2)mv²t
• D)mt²/(2v)
• E)mvt

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