Draw a square that is meant to represent you, draw an up arrow, a down arrow, a right arrow, and a left arrow. The Left arrow is FORCE FRICTION which is the floor adding friction against you, the Right arrow is FORCE APPLIED, which is the force that your legs are using to cause you to move, the Up arrow is FORCE NORMAL, which is the force that always act on something that is affected by gravity, and the Down arrow is FORCE GRAVITY. These are the four forces acting on you as you walk to the kitchen
