Question

8. The height of a ball t seconds after

being dropped from a 256-foot high
bridge is modeled by the function
h(t) = -8(2t - 32). How long did it
take the ball to hit the ground?
A 8 sec
B 16 sec
C 32 sec

Answer 1

B) 16

Explanation:

We have h(t)=0, because the ball is on the ground.

So we have:

-8(2t-32)=0

2t-32=0

2t=32

t=16

It took 16 sec