Question

Which of the following statements is correct for a round trip along the same route?

• A. Average speed is zero in a round trip
• B. Average velocity is zero in a round trip
• C. Average velocity and average speed, both are non-zero
• D. Average velocity is non-zero because displacement is non-zero.

Answer 1

The correct option is B

Average velocity is zero in a round trip

The average speed depends on the total distance travelled which is non-zero in this case. On the other hand, the average velocity depends on the total displacement of the body, which in this case is zero. Thus, the average velocity is zero.