SOLUTION: A ball is thrown straight up from a rooftop 300 feet high. The formula h = -16t^2 + 20t + 300 describes the ball’s height above the ground, h, in feet, t seconds after it was throw
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Question 1031343: A ball is thrown straight up from a rooftop 300 feet high. The formula h = -16t^2 + 20t + 300 describes the ball’s height above the ground, h, in feet, t seconds after it was thrown. The ball misses the rooftop on its way down and eventually hits the ground. How long will it take for the ball to hit the ground?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A ball is thrown straight up from a rooftop 300 feet high. The formula h = -16t^2 + 20t + 300 describes the ball’s height above the ground, h, in feet, t seconds after it was thrown. The ball misses the rooftop on its way down and eventually hits the ground. How long will it take for the ball to hit the ground?
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h = -16t^2 + 20t + 300
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At impact, h = 0.
h = -16t^2 + 20t + 300 = 0
Solve for t. Ignore the negative solution.
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