5. A person leaning over a balcony throws a ball vertically upward so that its height (above the ground) t seconds after it is thrown is (128 +32t - 16t2) feet. With what velocity will the ball hit the ground?

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Casey DurganLv2

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5. A person leaning over a balcony throws a ball vertically upward so that its height (above the ground) t seconds after it is thrown is (128 +32t - 16t2) feet. With what velocity will the ball hit the ground?

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