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A ball travels on a parabolic path in which the height (in feet) is given by the expression -16t^2 + 60t + 21, where t is the time after launch. What is the maximum height of the ball?

 Oct 13, 2020
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Maximum height will occur at time t = -b/2a     where b =60    a = -16

use this value of t in the equation to calculate the max  height

 
 Oct 13, 2020

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