a display is dropped off this hieght when will it hit the ground?
H(t)=-16t^2+162
H(t) = -16·t2 + 162
Find the value of t that makes H(t) = 0 ...
-16·t2 + 162 = 0
-16·t2 = -162
t2 = -162/ -16
t2 = 162/ 16
t = sqrt(162/16) (ignore the negative value)
