1. The problem statement, all variables and given/known data A skier is sliding down a 20o slope at constant speed, what is the kinetic friction coefficient? 2. Relevant equations E = 1/2 mv2 W = Fd F = ma F = μN = μmg 3. The attempt at a solution Attempted to use ma = μmgsin20, which crosses out the masses since mass was not given, but the skier is going at a constant speed so I'm assuming acceleration would be zero. Though I'm not sure how to continue the question or if I'm on the right track. Thanks in advance!