Answer:
2 seconds
Step-by-step explanation:
This means the height, and thus h(t), is equal to zero.
0=-16t^2 + 16t + 32
0= t^2 - t - 2 (divide both sides by -16)
0 = (t-2)(t+1) [factor]
t = -1, 2 [set each factor equal to zero]
But as time cannot negative, take t=2, giving us 2 seconds.
