A crane drops a 0.25 kg steel ball onto a steel plate.The ball's speeds just before impact and after are 4.0 m/s and 3.7 m/s,respectively.If the ball is in contact with the plate for 0.025 s,what is the magnitude of the average force that the ball exerts on the plate during impact?
A) 77 N
B) 3 N
C) 40 N
D) 37 N
E) 1.93 N
Correct Answer:
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