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

Foundation

Physics Foundation

Speed Velocity and Acceleration

Question

Zero

None of these

24 m/s

25 m/s

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Average velocity = $\frac{Total displacement}{Total time}$

= $\frac{0}{(\frac{5}{20} + \frac{5}{30})} = 0$

(∵ Particle is reaching at same postion)