Wednesday
July 30, 2014

Homework Help: physics

Posted by jason on Thursday, December 4, 2008 at 11:17pm.

a crane drops a .3 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 .03 s, what is the magnitude of the average force that the ball exerts on the plate during impact?

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