Question

A man leaves home for a cycle ride and comes back home after an half-an-hour ride covering a distance of one km. What is the average velocity of the ride?

Answer 1

Answer:

During half-an-hour time interval, displacement is zero as final and initial position are same. Thus, average velocity is zero.

Answer 2

Answer:

The average velocity of the ride is zero.

Explanation:

Given a man leaves home for a cycle ride and comes back home after half-an-hour covering a distance of one km.

Average velocity is defined as the rate of change in displacement.

Mathematically given by,

$Average~velocity, v=\frac{change~ in ~displacement}{time~ interval} =\frac{\Delta x}{\Delta t}$

In the present case, man starts from home and comes back, i.e., initial and final position are same.

There is no difference in the displacement, therefore the displacement is zero and hence the average velocity is zero.