1. The problem statement, all variables and given/known data Johnny is swinging (on a swing) at a velocity of 4m/s when he is 56 cm above the ground. What is his maximum height? Johnny is 45 Kg. 2. Relevant equations Pe = mgh Ke= (1/2)(m* v^2) Total energy= Pe + Ke 3. The attempt at a solution I tried setting the Ke equal to the Pe, but I get 0.81 Meters. However, I know that the correct answer is around 1.4 Meters. I would like to know how to get 1.4 Meters.