A 1000 kg car travels around a circular track at a constant speed. a. Draw the free-body diagram for the car (as viewed from the front of the car). b. If the radius of the path is 200 m and the car is traveling at 25 m/s, how long does it take the car to make a lap around the track? c. What is the net force acting on the car in the horizontal direction? d. What force is keeping the car in a circular path? e. What is the coefficient of friction between the car's tires and the road?

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!