Question

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A crane drops a 0.30 kg steel ball onto a steel plate.

A crane drops a 0.30 kg steel ball onto a steel plate. The ball's speeds just before impact and after are 4.5 m/s and 4.2 m/s, respectively. If the ball is in contact with the plate for 0.030 s, what is the magnitude of the average force that the ball exerts on the plate during impact?

Solutions

Expert Solution

J = m△v = Ft

.3(8.7) = F(.03)

Solve for F

F = 87 N



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