1. The problem statement, all variables and given/known data a rope is used to pull a 3.57kg block at constant speed a distance 4.06m along a horizontal floor. the force on the block from the rope is 7.68 N and is directed 15 degrees above the horizontal. a) calculate the work done by the ropes force b) calculate the increase in thermal energy of the block-floor system c) calculate the coefficient of kinetic friction between the block and floor. 2. Relevant equations W=FDcos(theta) 3. The attempt at a solution I solved for A by W=7.68*4.06*cos(5)and got A=30.1 but i am not sure what to do when solving for the thermal energy. For part C i know i need to calculate the Fn and am not sure how to find total friction force to solve for the coefficient.