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Underline the correct alternative :
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 BANGLISH-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. Underline the correct alternative : When a conservative force does p...

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  3. Underline the correct alternative : Work done by a body against fric...

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  4. Underline the correct alternative : The rate of change of total mome...

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  5. Underline the correct alternative : In an inelastic collision of two...

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

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

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

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

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

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

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

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

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

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

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

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  20. Two identical ball bearings in contact with each other and resting on ...

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