Whitney kicks a football off the ground. The height, h, in feet, of the football above the ground after t

seconds is given by h (t) = - 8t2 + 32t. How many seconds after the football is kicked does it hit the

ground for the first time? Write your answer in the box.

Question

Mathematics

Rohan Serrano

29 September, 20:19

Whitney kicks a football off the ground. The height, h, in feet, of the football above the ground after t

seconds is given by h (t) = - 8t2 + 32t. How many seconds after the football is kicked does it hit the

ground for the first time? Write your answer in the box.

+4

Answers (1)

Know the Answer?

Bryant Brooks · Answer 1

t=4s

Step-by-step explanation:

I'll assume the you mean $h (t) = -8t^2 + 32t$. So we want the height to be zero so $h (t) = 0$. Set up the equation:

$0=-8t^2 + 32t$.

Let's Solve:

$0=-8t^2 + 32t$

$0=-8t (t-4) $

$0=t-4$

$t=4$

So that means that t=4 seconds

Whitney kicks a football off the ground. The height, h, in feet, of the football above the ground after tseconds is given by h (t) = - 8t2 + 32t. How many seconds after the football is kicked does it hit theground for the first time? Write your answer in the box.

Whitney kicks a football off the ground. The height, h, in feet, of the football above the ground after t

seconds is given by h (t) = - 8t2 + 32t. How many seconds after the football is kicked does it hit the

ground for the first time? Write your answer in the box.