SOLUTION: h(t)=-16t^2+80t+5 What is the maximum height of the ball? How long will it take for the ball to hit the ground?

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Question 928392: h(t)=-16t^2+80t+5
What is the maximum height of the ball?
How long will it take for the ball to hit the ground?

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
h(t)=-16t^2+80t+5
What is the maximum height of the ball?
Max height is the vertex of the parabola, at t = -b/2a
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How long will it take for the ball to hit the ground?
h(t)=-16t^2+80t+5 = 0
Solve for t.
Ignore the negative solution.