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.

zero

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10 km/hr

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48 km/hr

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50 km/hr

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Solution

The correct option is A
zero

Average Velocity = Total displacement / Total time
Displacement is the shortest distance traveled by the man from the initial point to the final point.
As the student starts his journey from the same point and ends his journey at the same point.
Therefore, his total displacement will be zero.
Hence average velocity is 0

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Similar questions

John usually walks at 20 km/hr from his house to his school. One day, he starts walking at 30 km/hr and thereby reaches his school late.

A boy starts from his house and travels $5 km$ to reach his school. On finding it closed, he returns to his house. What is,

(a) the distance travelled by the boy (b) the final displacement of the boy.

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