A rock is thrown from the top of a 28m building at an angle of55 degrees above t

Question

A rock is thrown from the top of a 28m building at an angle of55 degrees above the horizontal. A. If the horizontal range of the throw is equal to theheight of the building, with what speed was the rock thrown? B. How long is it in the air? C. What is the velocity of the rock just before itstrikes the ground? Please give the answer in vector notation. I know that I need two equations, one for the horizontal motion and one for vertical. Both are constant-accelerationequations. Any help is much appreciated. A rock is thrown from the top of a 28m building at an angle of55 degrees above the horizontal. A. If the horizontal range of the throw is equal to theheight of the building, with what speed was the rock thrown? B. How long is it in the air? C. What is the velocity of the rock just before itstrikes the ground? Please give the answer in vector notation. I know that I need two equations, one for the horizontal motion and one for vertical. Both are constant-accelerationequations. Any help is much appreciated.

Explanation / Answer

Given :

Height ( h ) = 28 m

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