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A boy swims in a 100 m long pool. He cov...

A boy swims in a 100 m long pool. He covers 60 m with a velocity of 20 m/s and covers the rest of the distance with a velocity of 10 m/s. Calculate the average velocity of the boy.

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The correct Answer is:
14.2 m/s
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AAKASH INSTITUTE ENGLISH-MOTION IN A STRAIGHT LINE-TRY YOURSELF
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  7. The displacement s of an object is given as a function of time t by th...

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  8. If the velocity of an object is increasing and changing at a uniform r...

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  9. Draw the position-time graph of a moving object, moving with zero acce...

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  11. Which of the following x - t graphs shows an object moving with negati...

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  12. Draw the position-time graph of an object moving with positive acccele...

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  13. Draw the velocity-time graph of an object moving with uniform negative...

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  14. A body starting from rest has an acceleration of 5m//s^(2). Calculate ...

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  15. How can you determine the displacement and the acceleration of an obje...

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  16. The relation between the acceleration and time for an object is given ...

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  17. If the relation between acceleration and time for an object is given b...

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  18. A ball is thrown vertically upward. What is the magnitude of velocity ...

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  19. A ball is thrown vertically upward with a velocity of 20 m/s. Calculat...

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  20. A ball thrown up, what its velocity and acceleration at the top?

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