1. The problem statement, all variables and given/known data A 10.0kg box is accelerated from rest to 4.00 m/s in 1.00s. The force of kinetic friction on the box is 5.00N. A) What is the size of the applied force? B)What is the coefficient of sliding friction? 2. Relevant equations The five kinematic equations? μ = Ff/Fn Fn= mg 3. The attempt at a solution No idea.