Mathematics, 09.07.2019 14:30 rose782751
Apunter can kick a football with an initial velocity of 48 meters per second. how many seconds will it take the ball to return to the ground? use the formula h = vt - 16t^2
Answers: 1
![\bf \stackrel{h}{0}=\stackrel{v=48}{48t}-16t^2\implies 0=16t(3-t^2) \\\\[-0.35em] ~\dotfill\\\\ 0=16t\implies 0=t\impliedby \textit{when it first takes off from the ground} \\\\[-0.35em] ~\dotfill\\\\ 0=3-t^2\implies t^2=3\implies t=\sqrt{3}\impliedby \textit{when it came back down}](/tpl/images/0069/7333/5b3bc.png)
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Apunter can kick a football with an initial velocity of 48 meters per second. how many seconds will...
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