SOLUTION: A student dropped a ball from the top of a 64 foot building. The height of the ball after t seconds is given by the quadratic equation h=-16t^2+64. How long will it take the ball

Question 200254: A student dropped a ball from the top of a 64 foot building. The height of the ball after t seconds is given by the quadratic equation h=-16t^2+64. How long will it take the ball to hit the ground?
Answer by vleith(2983) (Show Source): You can put this solution on YOUR website!
what is the height of the ball when i hits the ground?
zero.
So substitute in 0 and solve for t

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