Question

A ball is dropped from a height of 9.4. How long will it take to fall to the ground

Answer 1

The ball is undergoing a free fall. Thus there is no initial velocity and the acceleration is accelearation due to gravity.

By the equation of kinematics,

`\begin{gathered} h=ut+(1)/(2)gt^2 \\ \Rightarrow9.4=0+(1)/(2)*9.8t^2 \\ \Rightarrow t=1.38\text{ s} \end{gathered}`

The time taken is 1.38 s