When does the average velocity become zero?

The average velocity becomes zero when the initial position and the final position of an object are the same, meaning the object has returned to its starting point.

Explanation:

• Average velocity is defined as the total displacement divided by the total time: Average velocity = Dsiplacement/time
• Displacement is a vector quantity that refers to the straight-line distance between the initial and final positions, along with the direction.
• If the object returns to its starting point, the displacement is zero, regardless of the path taken.
• When displacement is zero, the average velocity also becomes zero because the total displacement is divided by the total time, but since the displacement is zero, the average velocity will be zero.

Example:

If a person walks around a circular track and returns to the starting point after a certain time, the displacement is zero, and hence the average velocity will also be zero.

So, the average velocity becomes zero when the initial position and the final position of the object are the same, i.e., when the displacement is zero.