A person travels along a straight road for half the distance with velocity $v_{1}$ and the remaining half distance with velocity $v_{2}$ The average velocity is given by

A boy runs along a straight path for the first half of the distance with a velocity $v_{1}$ and the second half of the distance with a velocity $v_{2}$ . The average velocity V is given by

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If a particle moves from A to B along a straight line with velocity V1 and then B to A with velocity V2 its average velocity is

The correct option is D 0Average velocity =Total displacementTotal timeSince, in this case, the particle's initial and final positions are the same, therefore its Displacement =0.∴ Average velocity =0

If a particle moves from A to B along a straight line with velocity $V_{1}$ and then B to A with velocity $V_{2}$ its average velocity is

The correct option is D $0$
Average velocity $= \frac{Total displacement}{Total time}$
Since, in this case, the particle's initial and final positions are the same, therefore its Displacement $= 0$ .
$∴$ Average velocity $= 0$