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July 31, 2014

Homework Help: physic

Posted by Chan on Wednesday, September 30, 2009 at 1:27am.

Hi! Question:A ball is tossed from an upper-story window of a building.The ball is given an initial velocity of 7.80m/s at an angle of 21.0 degrees below the horizontal.It strikes the ground 3.00s later.
A.How far horizontally from the base of the building does the ball strik the ground?
B.Find the height from which the ball was thrown.
C.How long does it take the ball to reach a point 10.0m below the level of launching? Thank you so much for your help

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