SOLUTION: Please help me solve this problem: If an object is projected upward with an initial velocity of 112 feet per second from a height h of 128 feet, then its height t sec after it is p

SOLUTION: Please help me solve this problem: If an object is projected upward with an initial velocity of 112 feet per second from a height h of 128 feet, then its height t sec after it is p

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Question 886813: Please help me solve this problem: If an object is projected upward with an initial velocity of 112 feet per second from a height h of 128 feet, then its height t sec after it is projected is defined by the equation h=-16t^2+112t+128. How many sec after it is projected will it hit the ground?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
0=-16t^2+112t+128
solve for t
t=8
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