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August 4, 2015

Homework Help: Physics please help!!!!!!!

Posted by Steve on Thursday, November 17, 2011 at 6:31pm.

A ball is thrown vertically upward (assumed to be the positive direction) with a speed of 21.0 m/s from a height of 9.0 m.
(a) How high does the ball rise from its original position?

(b) How long does it take to reach its highest point?

(c) How long does the ball take to hit the ground after it reaches its highest point?

(d) What is the ball's velocity when it returns to the level from which it started?

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