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July 24, 2014

Homework Help: Math( help please ! )

Posted by Erin on Monday, October 17, 2011 at 4:52pm.

The height of a ball thrown vertically upward from a rooftop is modelled by h(t)=-5t^2=20t=50, where h(t) is the ball's height above the gorund,in meters, at time t seconds after the throw

a) determine the maximum height of the ball

b) how long does it take for the ball to reach its maximum height

c) how highis the rooftop

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