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December 20, 2014

December 20, 2014

Posted by **fred** on Friday, November 14, 2008 at 1:07am.

What is the velocity of the ball when it is 96 ft above the ground on its way up?

- calculus -
**drwls**, Friday, November 14, 2008 at 1:23amSolve the equation

16t^2 -160t +96 = 0

There will be two roots. Take the lowest t value as the solution. That will be the answer when the ball is going up.

Note that the equation can be simplifed to

t^2 -10t + 16 = 0

which factors easily.

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