1. The problem statement, all variables and given/known data A 68 kg in-line skater starts from rest and accelerates at 0.21 m/s square for 15s. a) Find her final velocty and total kinetic energy after the 15s of travel. b) If she exerts a breaking frictional force of 280N, find her stopping distance. 2. Relevant equations Ek=1/2mv square Eg=mg triangle (height)- triangle=multiply Wnc=Efinal-Einital 3. The attempt at a solution I got most of the equation i knw. I need help solving it with a step by step solution.