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Does the work done in raising a suitcase...

Does the work done in raising a suitcase on to platform depend upon how far it is raised up?

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No, the work done does not depend on the time rate with which the suitcase is raised.
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  2. Can a body have momentum without energy?

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  4. Can you associate potential energy with non-conservative force?

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  5. A rocket explodes in mid air. How does this affect its total momentum?

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  6. Define watt.

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  7. When a work is said to be done? Give some example.

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  8. State the condition under which a force does not work.

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  14. What is meant by the term potential energy ? Give its two examples.

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  15. What is meant by kinetic energy?

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  18. A body is moving at constant speed over a frictionless surface. What i...

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  19. Can a body have momentum without energy?

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