Question

A girl throws a rock horizontally at 10 m/s from the top of a building, 22 m above street level. Assuming free fall conditions and the ground is horizontal, how far horizontally from the base of the building will the rock hit the ground?

Answer 1

Answer:21.18 m

Step-by-step explanation:

Given

initial speed u=10 m/s

height of building h=22 m

time taken to complete 22 m

`h=ut+(1)/(2)at^2`

initial vertical velocity =0

`22=(1)/(2)gt^2`

`t=\sqrt{(22* 2)/(g)}`

`t=2.11 s`

Horizontal Distance moved

`R=u_x* t`

`R=10* 2.11`

`R=21.18 m`