1. The problem statement, all variables and given/known data 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. 2. Relevant equations (v final )^2 - (v initial)^2 = 2a (delta y) 3. 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.