Hello! Just wondering if anyone could point me in the correct direction with these problems? 1. The problem statement, all variables and given/known data "A skier coasts down a very smooth, 10 m high slope. If the speed of the skier on the top of the slope is 5.0 m/s, what is his speed at the bottom of the slope?" and... "If the skier has a mass of 60 kg, and the force of friction retards his motion by doing 2500 J of work, what is his speed at the bottom of the slope?" I just can't seem to figure out what equation to use to figure this out. Help! Thanks SO much!