1. The problem statement, all variables and given/known data A 15 kg crate rests on the floor. The coefficient of friction between the crate and the floor is 0.28. How much horizontal force is needed to accelerate the crate at 3.0 m/s^2? 2. Relevant equations Fnet=ma 3. The attempt at a solution m=15 kg F-f=ma F-[itex]M[/itex]N=ma F-[itex]M[/itex]mg=ma F=ma+[itex]M[/itex]mg F=15*3+.38*15*9.8 F=81.16 N. For a final rounded answer of: F=81.2 N. This answer seems correct to me, could someone please confirm? Thanks!