Help! I am a starter physicist and I need hlep on this question stated thus: 1. The problem statement, all variables and given/known data A sled is being pulled across a horizontal patch of snow. Friction is negligible. The pulling force points in the same direction as the sled's displacement, which is along the +x axis. As a result, the kinetic energy of the sled increases by 38%. By what percentage would the sled's kinetic energy have increased if this force had pointed 62° above the +x axis? 2. Relevant equations W = final KE - initial KE W = (F cos theta)*displacement 3. The attempt at a solution I tried using the work-energy theorem, but i couldn't solve for any of the variables. Then I turned to the second work formula, but still no dice.