Lab 6 Pre Quiz 1. Draw a free-body diagram(s) for a block being pulled along a rough surface. Consider the block not moving, accelerating and moving with constant velocity in your diagram(s). 2. In pushing or pulling a heavy box across the floor, is the force you need to apply to start the box moving greater than, less than, or the same as the force needed to keep the box moving? On what are you basing your choice? 3. How do you think the force of friction is related to the weight of the box? Explain. 4. Give one example from life where you have observed or experienced static and kinetic friction.