Question

in which case the velocity is zero and speed is having some value​

Answer 1

Hence, generally, when the total displacement is zero the average velocity is zero. For a better understanding, recall that the displacement of a body is a vector and hence is dependent on the direction. It is specifically defined as the rate of change of position of the object in a specified direction.

Answer 2

Answer:

If a person returns to his initial position,ie, a person goes from point A to point B and comes back to point A

Explanation:

In this case, displacement will be zero but total distance covered will have some value

Here, velocity will be zero but speed will have a non-zero value