1. The problem statement, all variables and given/known data If you push a crate horizontally with a force of 100 N across a 10 meter factory floor, and the friction between the crate the the floor is a steady 70 N, how much kinetic energy is gained by the crate? 2. Relevant equations KE=1/2mv² Work=change in KE Work=force*distance traveled 3. The attempt at a solution Im not sure how to get the net force. If all you have to do is add the friciton force and force from push than the solution should be: +100-(-70)=170 N 170 N(10 meters)=1700 J is this correct?