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Question

A student starts with a velocity of 40 km/hr for school at 4 km away from his house, Due to the closing of school, he returns soon to his house with a velocity of 60km/hr. His average velocity will be.


A

zero

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B

10 km/hr

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C

48 km/hr

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D

50 km/hr

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Solution

The correct option is A

zero


  1. Average Velocity = Total displacement / Total time
  2. Displacement is the shortest distance traveled by the man from the initial point to the final point.
  3. As the student starts his journey from the same point and ends his journey at the same point.
  4. Therefore, his total displacement will be zero.

Hence average velocity is 0


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