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A motor cycle stuntman drives off a cliff at 80 mi/hr and hits the safety net...

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Physics

A motor cycle stuntman drives off a cliff at 80 mi/hr and hitsthe safety net 2.9 s later. How high was the cliff and how far isthe net from the base of the cliff?

A rock is thrown horizontally from the 2nd floor building and itlands 7.5 m from the base of the building. Assume the initialheight of the rock is 5.5 m. What is the initial speed of therock?

Answer & Explanation Solved by verified expert
3.8 Ratings (459 Votes)
2 Rock thrown horizontally GIVEN Height dy 55 m Range dx 75 m Since the ball is thrown horizontally then the initial speed is the same as the horizontal speed vx We know that vx dx tair    See Answer
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