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

Question

Dr. Abubacker · Accepted Answer

[Solution from source] After a complete lap the car is back at its start, so displacement and hence average velocity are zero. Average speed = distance/time = 2π × 100/62.8 = 10 m/s. Average speed cannot be zero for a moving car. Answer (2).

Q. A car runs at a constant speed on a circular track of radius 100 m, taking 62.8 s for every circular lap. The average velocity and average speed for each circular lap respectively is :

Explanation

Reviewed by Dr. Abubacker

Want to attempt the full paper?