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OpenStudy (anonymous):
A punter kicks a football upward with an initial speed of 48 feet per second. After how many seconds does the ball hit the ground? Use the formula h = rt − 16t2 where h represents height in feet and r represents the initial speed.
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OpenStudy (anonymous):
\[48t-16t^2=0\] solve for \(t\)
OpenStudy (anonymous):
factor and get \[16t(t-3)=0\] and solve in one step
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