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Work done by a body against friction alw...

Work done by a body against friction always results in a loss of its kinetic/potential energy .

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Kinetic energy
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NCERT GUJARATI-WORK, ENERGY AND POWER-EXERCISES
  1. Answer the following : In Fig.6.13. (i) the man walks 2m carrying a ...

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  2. When a conservative force does positive work on a body , the potential...

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  3. Work done by a body against friction always results in a loss of its k...

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  4. The rate of change of total momentum of a many -particle system is pro...

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  5. In an inelastic collision of two bodies, the quantities which do not c...

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  6. State if each of the following statements is true or false. Give reaso...

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  7. State if each of the following statements is true or false. Give reaso...

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  8. State if each of the following statements is true or false. Give reaso...

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  9. State if each of the following statements is true or false. Give reaso...

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  10. Answer carefully, with reasons : In an elastic collision of two bill...

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  11. Answer carefully, with reasons : Is the total linear momentum conser...

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  12. Answer carefully, with reasons : What are the answers to (a) and (b)...

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  13. Answer carefully, with reasons : If the potential energy of two bill...

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

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  15. A body is moving unidirectionally under the influence of a source of c...

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  16. A body constrained to move along the z-axis of a coordinate system is ...

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  17. An electron and a proton are detected in a cosmic ray experiment, the ...

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  18. A rain drop of radius 2mm falls from a height of 500 m above the groun...

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  19. A molecule in a gas container hits a horizontal wall with speed 200 ms...

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  20. A pump on the ground floor of a building can pump up water to fill a t...

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