Physics question -- Forces on a mass on horizontal surface 1. The problem statement, all variables and given/known data A 2.5 kg mass at rest on a horizontal surface is acted upon by an applied horizontal force of 150 N. A frictional force of 100 N acts on the mass. How much work is done on the mass? 2. Relevant equations I'm not too sure if any equation would be used. 3. The attempt at a solution Again, I am not sure how to answer this question. I think that the work would be 0 but I am not sure.