University Physics with Modern Physics with Mastering Physics (11th Edition)

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3.70: The firecracker’s falling time can be found from the usual g h t 2 = The firecracker’s horizontal position at any time t (taking the student’s position as 0 = x ) is 0 2 2 1 = - = at vt x when cracker hits the ground, from which we can find that
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Unformatted text preview: a v t / 2 = . Combining this with the expression for the falling time: g h a v 2 2 = so 2 2 2 a g v h =...
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This document was uploaded on 02/04/2008.

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