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what are the units of work and energy ?...

what are the units of work and energy ?

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LAKHMIR SINGH & MANJIT KAUR-WORK AND ENERGY-Exercise
  1. What is the condition for a force to do work on a body ?

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  2. Is energy a vector quantity ?

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  3. what are the units of work and energy ?

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  4. What is the work done against gravity when a body is moved horizontall...

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  5. By now much will the kinetic energy of a body increase if its speed is...

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  6. What do you mean by kinetic energy ? Derive an expression for the kine...

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  7. If the speed of body is halved, what will be the change in its kinetic...

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  8. On what factors does the kinetic energy of a body depend ?

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  9. Which would have a greater effect on the kinetic energy of an object :...

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  10. How fast should a man of 50 kg run so that his kinetic energy be 625 J...

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  11. State whether the following objects possess kinetic energy, potential ...

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  12. two bodies A and B of equal masses are kept at heights of h and 2h res...

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  13. What is the kinetic energy of a body of mass 1 kg moving with a speed ...

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  14. Is potential energy a vector or scalar quantity ?

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  15. A load of 100 kg is pulled up by 5 m. Calculate the work done. (g = 9....

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  16. State whether the following statement is true or false : The potenti...

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  17. What happens to the potential energy of a body when its height is dou...

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  18. What kind of energy is possessed by the following ? (a) A stone kept...

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  19. Fill in the following blank with suitable words: (a) Work is measure...

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  20. What are the quantities on which the amount of work done depends ? How...

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