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OpenStudy (anonymous):
if a ball is thrown directly upward with a velocity of 80ft/s, its height (in feet) after t seconds is given by y= 80t - 16t^2. What is the maximum height attained by the ball?
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OpenStudy (asnaseer):
to find the maximum, find the derivative of y with respect to t and set it to zero. this will give you a value for t when the ball attains its maximum height.
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