SOLUTION: A window washer accidentally drops a bucket from the top of a 144 meter building. The height h of the bucket after t seconds is given by the formula . When will the bucket hit the

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: A window washer accidentally drops a bucket from the top of a 144 meter building. The height h of the bucket after t seconds is given by the formula . When will the bucket hit the       Log On


   

Question 376255: A window washer accidentally drops a bucket from the top of a 144 meter building. The height h of the bucket after t seconds is given by the formula . When will the bucket hit the ground?

Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
A window washer accidentally drops a bucket from the top of a 144 meter building.
The height h of the bucket after t seconds is given by the formula:
h = -16t^2 + 144
h = 0 when it hits the ground
-16t^2 + 144 = 0
-16t^2 = -144
Divide both sides by -16
t^2 = 9
t = sqrt%289%29
t = 3 seconds to hit the ground
.