A 100.0 kg block moves across a surface where the coefficient of friction9kinetic) is 0.10. The block is pushed horizontally with a force equal to 40% of its weight. How much work does the pushing force do in moving the block 100.0m? How much work does friction do? What is the change in velocity? How much greater would the change in velocity be if there was no frictional dissipation of energy involved? For this probelm I get 39200J for the work done by the pushing force and I get 9800J for the work done by friction. Are these answers correct? THen I have no idea how I would find the change in velocity? Any suggestions?