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A person walking on a horizontal road wi...

A person walking on a horizontal road with a load on his head does no work.Explain.

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JBD PUBLICATION-WORK,ENERGY AND POWER-EXAMPLE
  1. What is the significance of work-energy theorem?

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  2. What is power ? Write its SI unit also.

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  3. A person walking on a horizontal road with a load on his head does no ...

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  4. A meteorite burns in the atmosphere before it reaches the earth's surf...

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  5. A body is initially at rest .It undergoes one-dimensional motion with ...

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  6. A body is initially at rest .It undergoes one-dimensional motion with ...

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  7. A body is initially at rest .It undergoes one-dimensional motion with ...

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  8. A body is initially at rest .It undergoes one-dimensional motion with ...

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  9. A rough incline plane is placed on a cart moving with a constnat veloc...

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  10. Why is electrical power required at all when the elevator is descendin...

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  11. Calculate the power of a crane in watts,which lifts a mass of 100 kg t...

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  12. A body falls towards earth in air. Will its total mechanical energy be...

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  13. What is a collision?

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  14. If two bodies collide and one is initially at rest, is it possible fo...

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  15. If two bodies collide and one is initially at rest, is it possible fo...

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  16. Distinguish between a head on and an oblique collision.

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  17. Is it possible to have a collision in which the whole of KE is lost?

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  18. What conclusion can you draw about the masses of projectile and target...

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  19. What conclusion can you draw about the masses of projectile and target...

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  20. What conclusion can you draw about the masses of projectile and target...

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