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May 22, 2015

Homework Help: Math

Posted by Anonymous on Friday, July 6, 2012 at 8:26am.

An object is propelled vertically upward from the top of a 144-foot building. The quadratic function s(t)= -16t2+192+144 models the ball's height above the ground, in feet, s(t) seconds after it was thrown. How many seconds does it take until the object finally hits the ground? Round to the nearest tenth of a second if necessary.
Answer

0.7 seconds

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