Physics Work,Power & Energy Level: Misc Level

A 75 kg cross country .skier glides over snow.the coefficient of friction between skis and snow is 0.20.Assume all the snow beneath his skis is at 0 oc and that all the internal energy generated by friction is added to snow that sticks to his skis until melted. How far would he have to ski to melt 1.0 kg of snow?