An object thrown directly downward from the top of a cliff with an initial velocity of v0

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An object thrown directly downward from the top of a cliff with an initial velocity of v0 feet per second falls s = v0t + 16t2 feet in t seconds. If it strikes the ocean below in 3 seconds with a speed of 140 feet per second, how height is the cliff?
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Calculus

ISBN: 978-0131429246

9th edition

Authors: Dale Varberg, Edwin J. Purcell, Steven E. Rigdon

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