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April 23, 2014

Homework Help: physics

Posted by carlton on Sunday, September 30, 2012 at 7:43pm.

A steel ball is dropped onto a hard floor from a height of 2.15 m and rebounds to a height of 2.09 m. (Assume that the positive direction is upward.)
(a) Calculate its velocity just before it strikes the floor.
-6.49 m/s
(b) Calculate its velocity just after it leaves the floor on its way back up.
m/s
(c) Calculate its acceleration during contact with the floor if that contact lasts 0.0800 ms.
m/s2
(d) How much did the ball compress during its collision with the floor, assuming the floor is absolutely rigid?

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