Question

Bob is riding the giant drop at flags of America. If Bob free falls for 2.0 seconds, what will be his final velocity and how far will he fall?

Answer 1

His final velocity = `20 m/s` and displacement is also `20 m`

Explanation:

Free falling means falling with acceleration due to gravity i.e `g`

So, we can use `v=u+at` (all the symbols are bearing their conventional meaning)

Here, `u=0,t=2,a=g`

So, `v =20 m/s`

In that time if he goes by `x m`, we can use `v^2 = u^2 +2ax`

Here, `v=20,u=0,a=g`

So, `x=20 m`