1. The problem statement, all variables and given/known data A force of 105N is applied horizontally to a 20.0 kg box to move it across a horizontal floor. If the box has an acceleration of 3.00 m/s^2, find the coefficient friction. 2. Relevant equations coefficient friction = Ff/Fn 3. The attempt at a solution I converted the mass into newtons so 20.0 kg = 196 N I have no idea how to do this. I drew a picture, but I don't know what to do with the acceleration.