A boy starts from a point 'O' and travels 50 m in 30 s. He returns back to the same point 'O' in 20 s, then the average velocity of the boy is

0 m/s

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1 m/s

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4 m/s

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Solution

The correct option is A 0 m/s
Since the boy starts from point 'O', and returns to the same point, the total displacement of the boy is 0 m.
We know, $Average velocity = \frac{Total displacement}{Total time} = \frac{0}{20} = 0 m s^{- 1}$ .
Therefore, average velocity of the boy is $0 m s^{- 1}$ .

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A boy starts from a point 'O' and travels 50 m in 30 s. He returns back to the same point 'O' in 20 s, then the average velocity of the boy is

The correct option is A 0 m/sSince the boy starts from point 'O', and returns to the same point, the total displacement of the boy is 0 m. We know, Average velocity=Total displacementTotal time=020=0 ms−1. Therefore, average velocity of the boy is 0 ms−1.

The correct option is A 0 m/s
Since the boy starts from point 'O', and returns to the same point, the total displacement of the boy is 0 m.
We know, $Average velocity = \frac{Total displacement}{Total time} = \frac{0}{20} = 0 m s^{- 1}$ .
Therefore, average velocity of the boy is $0 m s^{- 1}$ .