Hey guys, I got a test tommorow regarding Work, Efficiency, Conservation of Mass, and all those other things. And I needed help with this question regarding work with friction. Oooh, I wish I was good in physics :( If anyone knows the answer, please post and tell me how to do it properly. Many thanks! 1. The problem statement, all variables and given/known data A toddler pushes a chair at a constant speed with a force of 25.0N (Applied Force = 25N to the right) for a distance of 2.5m, but the chair is being pushed across a smooth floor against a force of friction (resistance of 10.0N) (Force of friction = 10N to the left). How much work is being done? 2. Relevant equations Work=AppliedForce*displacement Force of gravity=mg Net force=ma 3. The attempt at a solution Well, I figured that I would subtract 10N from 25N and then use the result (15) and calculate it by the displacement, which is 2.5m. But when I checked my answer at the back of my physics textbook, my answer was incorrect. Now, I'm pretty much stuck? Would the force of friction be of the same value as the applied force?