Question

How much time will it tie for the ball to reach the ground

Answer 1

`\begin{gathered} h=\text{ }12.2m \\ g=9.81m/s^2 \\ t=\text{?} \\ h=(gt^2)/(2) \\ \text{Solving t} \\ 2h=gt^2 \\ t^2=(2h)/(g) \\ t=\sqrt{(2h)/(g)} \\ t=\sqrt[]{(2(12.2m))/(9.81m/s^2)} \\ t=\sqrt[]{(24.4m)/(9.81m/s^2)} \\ t\approx1.6s \\ To\text{ reach the ground it takes 1.6 s} \end{gathered}`