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How long should the fuse last

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Reference no: EM131563014

Question: Solve the given applied problem.

The height h (in m) of a fireworks shell shot vertically upward as a function of time t (in s) is h = -4.9t2 + 68t + 2. How long should the fuse last so that the shell explodes at the top of its trajectory?

Reference no: EM131563014

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