Suppose that your car is stuck on ice. The wheels spin, but the car does not move. Your friend suggests that you let the air out of the tires to increase the amount of friction. What are some reasons your friend might think this? Discuss whether or not these reasons are consistent with what you have learned about friction.
The center of mass of a system acted on only by internal forces cannot accelerate. without friction a car cannot move. This is a consequence of Newton's third law
