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A car runs at a constant speed on a circular track of radius 100 m, taking 62.8 seconds in every circular loop. The average velocity and average speed for each circular loop respectively, is

1. 0, 10 m/s
2. 10 m/s, 10 m/s
3. 10 m/s, 0
4. 0, 0

Correct answer: 0, 10 m/s

Solution

The average velocity over a complete circular loop is zero because the displacement is zero (the car returns to its starting point). The average speed is the total distance traveled divided by time, which is (2π × 100) / 62.8 = 10 m/s.

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