between the tires and the road. A. Heat B. Friction C. Gravity D. Magnetism 12. What causes the rubber ball that rolls on a smooth floor to slow down and then stop? A. The wax and dirt on the floor stick on the floor B. The force that made the ball roll is not large enough to make it continue rolling C. The friction between the ball and the floor prevents the ball to continue rolling D. The force that started the ball rolling does not act on the ball anymore 13. A marble rolling on a rough surface will slow down and eventually stop moving. What force prevents it from moving continuously? A. Wind B. Friction C. Gravity D. Magnetism 14. What force causes a ball that rolls on a level surface to slow down and stop? A. Friction B. Inertia C. Gravity D. Wind 15. Which of the following show that friction is present? A. Deformed cans B. Slowing down of a moving object C. Dropping objects on the ground D. None of these​