1. The problem statement, all variables and given/known data A car travels on a circular track at 20m/s. The track has a circumference of 2.0km. What is the average velocity of the car over one lap? 2. Relevant equations 3. The attempt at a solution Since the car is travelling at a constant speed of 20m/s, wouldn't the average velocity be 20m/s? The answer key says 0.