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OpenStudy (anonymous):

A rock is thrown from the top of a 20 m building at an angle of 53 degrees above the horizontal. If the horizontal range of the throw is equal to the height of the building, with what speed was the rock thrown. What is the velocity of the rock just before it strikes the ground?

OpenStudy (anonymous):

I found approixmately 23.161 But solution is too long!

OpenStudy (anonymous):

oh well can u plz explain it?

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