1. The problem statement, all variables and given/known data A ski starts from rest and slides down a 28∘ incline 65m long. If the coefficient of friction is 0.090, what is the ski's speed at the base of the incline? If the snow is level at the foot of the incline and has the same coefficient of friction, how far will the ski travel along the level? 2. Relevant equations KE = (1/2)mv2 PEg = mgh Note that I want to solve this problem using energy relations, not kinematics. 3. The attempt at a solution Taking Point A to be the top of the ramp, point B to be right before the bottom. PEg = KE + Ediss mgh = (1/2)mv2 + Ff mgh = (1/2)mv2 + μFN mgh = (1/2)mv2 + μmg(sin 30∘) gh = (1/2)v2 + μg(sin 30∘) (9.8m/s2)(30.5157m) = (1/2)(v2) + (0.090)(9.8m/s2)(sin 30∘) v = 24.4 m/s. That answer was incorrect. I have not yet attempted the second question since I don't have a correct answer for the first one.