Question

a ball thrown horizontally from the top of a tall cliff three seconds later the ball has fallen a vertical distance ofa.) 20 mb.) 30 m c.) 45 md.) depends on the horizontal speed of the ball

Answer 1

Given data

The duration of the ball traveled is t = 3 s

The expression for the vertical distance is given as:

`S=(1)/(2)gt^2`

The acceleration due to gravity is taken as g.

Substitute the value in the above equation.

`\begin{gathered} S=(1)/(2)*10m/s^2*(3s)^2 \\ S=45\text{ m} \end{gathered}`

Thus, the vertical distance is 45 m.

Thus, the correct option is (c).