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If an object is dropped from a height of 85 feet, the function h(t)=-16t^2+85 gives the height of the object after t seconds. Approximately, when will the object hit the ground? a. 85.00 seconds b. 69.00 seconds c. 0.33 seconds d. 2.30 seconds

Donald Ward

in Mathematics

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Craig Stewart on June 7, 2018

We are given the function of the situation. The function is given as h(t) = -16t^2 + 85 where h(t) means the height is a function of time. For this case, our height will be equal to zero and we find the time at which it hits the ground. Therefore, 0 = -16t^2 + 85t = 2.30 secondsThe answer is d.


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