Question

If a golf ball is hit with an upward velocity of 96 feet per second, its height h in feet above the ground can

be modeled by h(t) = - 16t2 + 96t, where t is in seconds.
(a) Use factoring to determine when the golf ball strikes the ground.
The ball strikes the ground after
seconds.

Answer 1

Explanation:

-16t² + 96t = 0

divide by -16

t² - 6t = 0

t(t - 6) = 0

so either

t = 0 (the ball gets wh*acked)

or

t - 6 = 0

t = 6 s when the ball hits assumed level ground again.

Answer 2

Explanation:

-16t² + 96t = 0

divide by -16

t² - 6t = 0

t(t - 6) = 0

so either

t = 0 (the ball gets wh*acked)

or

t - 6 = 0

t = 6 s when the ball hits assumed level ground again.