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A body is falling from a height h. After...

A body is falling from a height h. After it has fallen a height `h/2`, it will possess

A

only potential energy

B

only kinetic energy

C

half potential and half kinetic energy

D

more kinetic and less potential energy

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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
  1. The work done on a object does not depend upon the

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  2. Water stored in a dam possesses

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  3. A body is falling from a height h. After it has fallen a height h/2, i...

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  4. Two electrodes are maintaned at a potential difference of 100 V. An e...

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  5. A car with K.E. 100 J is moving on a horizontal road. Now 200 J work i...

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  6. Two bodies with kinetic energy in the ratio of 4:1 are moving with equ...

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  7. A certain household has consumed 250 units of electric energy during a...

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  8. If mass is doubled and velocity is halved then new kinetic energy is

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  9. When the force retards the motion of the body, the work done is :

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  10. In which of the following examples, work done is negative?

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  11. In which of the following applications is work is not done?

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  12. For a force to do maximum work, what should be the angle between force...

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  13. State the SI unit of potential energy.

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  14. What is the commercial unit of electical energy? Represent it in terms...

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  15. A boy throws a rubber ball vertically upwards. What kind of work is do...

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  16. A boy throws a rubber ball vertically upwards. What kind of work is do...

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  17. A person holds a bundle of hay over his head for 30 minutes and gets t...

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  18. Express kilowatt hour in terms of joules.

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  19. Two children A and B each weigh 20 kg climb a rope up a height of 10 m...

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  20. Two children A and B each weigh 20 kg climb a rope up a height of 10 m...

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