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Show that the rate of change of kinet...

Show that the rate of change of kinetic energy is a power .

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Define kinetic energy

A body of mass 2 kg is rest on a smooth horizontal surface . When a horizontal force of 0.5 N acts on this bofy it is displaced in the direction of the force . Find the work done by the force in 8.0 s .Show that this work is equal to the change in kinetic energy of the body .

A sample of an ideal gas escapes into an evacuated container, there is no change in the kinetic energy of the gas. Why?

The kinetic energy of the object

What is the kinetic energy of an object?

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KUMAR PRAKASHAN-WORK, ENERGY AND POWER -SECTION - A Questions - Answers (Try Yourself (VSQs))
  1. Define kinetic energy .Give its unit and dimensional formula and menti...

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  2. Is kinetic energy a scalar quantity or vector quantity ?

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  3. Show that the rate of change of kinetic energy is a power .

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  4. Whether the work energy theorem is a scalar or a vector ?

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  5. If the kinetic energy of body increases them ?

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  6. What are conservative force , non - conservative force , conservative ...

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  7. Which quantity is obtained by taking negative detective of potential e...

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  8. What is potential energy ? Explain gravitational potential energy .

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  9. What is potential energy ? Explain gravitational potential energy .

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  10. Write the dimensional formula of gravitational potential energy .

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  11. What are conservative force , non - conservative force , conservative ...

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  12. State and establish principle of conservation of mechanical energy .

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  13. Write a principle of non - conservative force for mechanical energy .

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  14. Write the equation of total mechanical energy of a body having mass m ...

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  15. Write the equation of total mechanical energy of a body having mass m ...

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  16. Find the speed of a body at the ground when it fall freely at height 2...

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  17. What is variable force ?

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  18. Write the formula of Hock's law .

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  19. What is spring constant ?

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  20. On which the work done by a spring depends ?

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