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Question

A car runs at constant speed on a circular track of radius 10 m taking 6.28 s on each lap. The average speed and average velocity on each complete lap is

A
Velocity 10 m/s, speed 10 m/s
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B
Velocity 0, speed 10 m/s
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C
Velocity 0, speed 0
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D
Velocity 10 m/s, speed 0
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Solution

The correct option is B Velocity 0, speed 10 m/s
Since after each lap the position of the car is same as initial so the average velocity will be zero.
Total Distance =2πr=2×3.14×10=62.8 m
Total time =6.28 s
Average speed =dt=62.86.28=10 m/s

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