Bobosharif S. answered • 03/27/18

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4.4
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Mathematics

h(t)=-16t

^{2}+100, Assuming that at t=0 its height is 100 feet (h(0)=100), after 3 seconds it goes down by h(3)=100-16*3^{2}=100-144=-44So, after 3 seconds the height of the object is 100-44=56 ft.