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April 23, 2014

Homework Help: physics

Posted by SAM on Sunday, January 30, 2011 at 5:46pm.

You stand at the top of a cliff while your friend stands on the ground below you. You drop a ball from rest and see that it takes 0.90 for the ball to hit the ground below. Your friend then picks up the ball and throws it up to you, such that it just comes to rest in your hand.

What is the speed with which your friend threw the ball?

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