1. The problem statement, all variables and given/known data A 40.0kg box initially at rest is pushed 5.00 m along a rough, horizontal floor with a constant applied horizontal force of 130 N. The coefficient of friction between box and floor is .300. Find the change in kinetic energy of the box. 2. Relevant equations (delta)K=K(final)-K(initial) K(final)=1/2mv^2 3. The attempt at a solution Work=650. J (change)Internal Energy=588 J Fk=118 How do you find the change in Kinetic energy without the velocity?