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Asked by Bob

A ball is rolled off the flat roof of a 15-storey building that is 45 m above a playground. When will the ball strike the ground if you can ignore air resistance? If you believe that there is not enough information given, explain what is needed.
13 years ago

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Answered by bobpursley
hf=hi-1/2 g t^2
0=45-1/2 g t^2 solve for t
13 years ago
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