SOLUTION: The height of a ball thrown straight upward is measured by the function h(t)=-16t^2+40t. When is the ball at a height of 48 ft?

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equation Customizable Word Problems -> SOLUTION: The height of a ball thrown straight upward is measured by the function h(t)=-16t^2+40t. When is the ball at a height of 48 ft?      Log On


   

Question 296290: The height of a ball thrown straight upward is measured by the function h(t)=-16t^2+40t. When is the ball at a height of 48 ft?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
plug in 48 for h(t) and solve for t