Question

If an object is dropped from a height of 144 feet, the function h(t)= -16t^2+144 gives the height of the object after t seconds. When will the object hit the ground?


A. 9 s
B. 6 s
C. 1.5 s
D. 3 s

Answer 1

D

Answer 2

At t=0 h=144 and at t=3 h=0 that is it hits the ground

Answer 3

Set, h(t)=0 and solve for t. answer is D (3 seconds)

Answer 4

Thanks