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April 18, 2014

Homework Help: Physics

Posted by AH on Thursday, October 25, 2012 at 8:02pm.

A 0.4 kg ball strikes a smooth level floor with a velocity of 5.0 m/s, 60 degrees below the horizontal.  It rebounds off the floor with an unknown velocity and reaches a maximum rebound height of 0.60 m. If the duration of the collision with the floor is 50 milliseconds, then what was the average (magnitude of the) normal force (in Newtons) the ground applied to the ball?

Hint: Use the impulse-momentum theorem.

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