Question

A ball dropped from the top of a building hits the ground 9 s later. How high is the building (in meters)

Answer 1

1296 meters

Explanation:

I assume we use the free fall equation
`s=16t^2`

After 9 seconds:

`s=16t^2`

`s=16(9)^2`

`s=16(81)`

`s=1296`

This means that the height of the building is 1296 meters