- #1

- 144

- 0

## Homework Statement

A ball is thrown vertically from the edge of a cliff. It rises 10 m above the cliff, then falls 50 m below the cliff.

Find the inital velocity and determine the time the ball was in the air.

## Homework Equations

(v final )^2 - (v initial)^2 = 2a (delta y)

## The Attempt at a Solution

I'm not sure if I should use 10 or 60 m for the displacement in this equation.

I used 60 m and got v inital = 34. 292 m/s.