1. The problem statement, all variables and given/known data An arrow(mass=0.2kg) is fired at a 45 degree angle with an inital velocity of 15 m/s. Find it's max height and kinetic energy when it is at it's max height. 2. Relevant equations Ek=1/2mv^2 Ep=mgh 3. The attempt at a solution I tried breaking it down to x and y components, but I don't know if thats right.