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OpenStudy (anonymous):
find the time,t, in seconds that it takes an object dropped from a height of 784 feet to reach the ground. use the function h=-16t^2+784
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OpenStudy (mertsj):
We want the time when the height is 0 since the object is on the ground. So set h = 0 and solve for t
OpenStudy (mertsj):
\[-16t^2=-784\] \[t^2=49\] \[t=7\]
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