Question

A body goes from A to B with a velocity of 20 m/s and comes back B to A with a velocity of 30 m/s. The average velocity of the body during the whole journey is

• A. Zero
• B. 24 m/s
• C. 25 m/s
• D. None of these

Answer 1

The correct option is A Zero

Since $avg.velocity=\frac{displacement}{time}$

In the whole process above, the final position and the initial position are the same, which means that the displacement is Zero.

I.e. avg. velocity = 0