**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.

http://ift.tt/1h7JV4c