Arturo O. answered • 01/13/18

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h(t) = -16t

^{2}+ 64t + 8Set h = 36 and solve for t.

36 = -16t

^{2}+ 64t + 8-16t

^{2}+ 64t - 28 = 0Using the quadratic formula,

t = 0.5 sec and 3.5 sec

It reaches 36 ft in 0.5 sec on the way up and again in 3.5 sec on the way down.

Arturo O.

01/16/18