1. The problem statement, all variables and given/known data A 65-kg skier coasts up a snow-covered hill that makes an angle of 25° with the horizontal. The initial speed of the skier is 6.4 m/s. After coasting 1.9 m up the slope, the skier has a speed of is 3.2 m/s. 2. Relevant equations 3. The attempt at a solution Work done if force F applied over a distance d. W= Fd Also Ke= 0.5mV^2 Difference in Kinetic energy dKe dKe=Ke1 - Ke2 dKe= 0.5m(V1^2 - V2^2) dKe= W a) W=dKe= 0.5m(V1^2 - V2^2) W= 0.5x65(6.4^2 - 3.2^2) W= 998.4 Joules P=mgh Pe= 65 x 9.81 x 1.9 sin(25)= 511.5 J Wf= W- Pe= 998.4 - 511.5 = 486.9 J what am i doing wrong?