Im having trouble with this problem. I know that KE=1/2mv^2 and the Wrok engergy theorm W=KFf-KEo but im having trouble relating the figure to KE. Two boxes are connected to eachother as show. The system is released from rest and the 1.00 kg box falls 1.00 m. The surface of the table is frictionless. What is the KE of the box before it reaches the floor? Diagram of Problem EDIT- I was looking itover and I think I kind of know what to do... I need to find KEf. KEf=W+KEo and to find W, W=(F cos 180) s is that on the right track?