Hey, I have a question that I can't seem to work out...can anybody please help me?! Question: An extreme skier, starting from rest, coasts down a mountain slope that makes an angle of 25 degrees with the horizontal. The coefficient of kinetic friction between her skis and the snow is 0.200. She coasts down a distance of 10.4 m before coming to the edge of a cliff. Without slowing down, she skis off the cliff and lands downhill at a point whose vertical distance is 3.50 m below the edge. How fast is she going just before she lands? I have set the problem up and come to realize that this will take 2 seperate analyses: one before she flies off the cliff and one after to get the final velocity of the second analysis, where v final of the 1st analysis will equal v initial of the 2nd. What has me stumped is the fact that I was given no mass. In order to to find my kinetic energy (KE = 1/2 mv (initial)^2 + W) I need a mass. Can anybody please help me?! I am a lost cause at the moment. Your help is MUCH appreciated! Thank you!!