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When a body is falling freely from some ...

When a body is falling freely from some height work done by gravity is

A

negative

B

positive

C

zero

D

may be positive or negative

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-WORK POWER ENERGY-EXERCISE - 1A
  1. The area under a .force - displacement. curve gives :

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  2. The work done by gravity in lifting a body to a certain height depends...

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  3. When a body is falling freely from some height work done by gravity is

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  4. A man is waiting at a bus stop by holding a box on his head. Work done...

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  5. A block of mass .m. is pulled by a force .F. on a level surface throug...

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  6. In the case of conservative force

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  7. Two identical bodies of same mass are raised to same heights by two pe...

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  8. Two bodies of different masses have same linear momentum. The one havi...

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  9. Two bodies of different masses have same K.E. The one having more mome...

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  10. The total workdone on a particle is equal to change in it.s kinetic en...

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  11. Two bodies of masses m, and m, have equal momentum. Their K.E. are in ...

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  12. A particle moves along a circle with acceleration of constant magnitud...

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  13. Two springs have their force constants k(1) and k(2) and they are stre...

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  14. A lorry and a car moving with same KE are brought to rest by applying ...

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  15. A larry and a car moving with same momentum are brough to rest by appl...

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  16. A shell is fired into air at an angle theta with the horizontal from t...

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  17. If the force acting on a body is inverely proportional to its speed, t...

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  18. The kinetic energy of freely falling body

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  19. A body can have

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  20. When a wound spring dissolved in an acid, the temperature of the acid

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