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April 21, 2014

Homework Help: physics

Posted by kulani on Sunday, February 5, 2012 at 9:04am.

A tennis ball of mass 100g is dropped from a height of 40m.It hits the ground and bounces back to a height of 30m after an impact of 0,01s.Ignore the air resistance .what was the velocity of the ball when it hit the ground ?

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