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h = 0 when the ball hit the ground, soΒ
0 = rt - 16t^2Β
Since r = 32,Β
0= 32t - 16t^2Β
16t(2 - t) = 0Β
t = 0 or 2Β
At t=0, h=0 but the ball hasn't left the ground yet.Β
Thus, the answer is 2.
h = 0 when the ball hit the ground, soΒ
0 = rt - 16t^2Β
Since r = 32,Β
0= 32t - 16t^2Β
16t(2 - t) = 0Β
t = 0 or 2Β
At t=0, h=0 but the ball hasn't left the ground yet.Β
Thus, the answer is 2.
