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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 - I
  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. body against friction is mgS 12.

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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 are dropped similtaneously from the top...

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  9. Three spheres of different materials are in motion their radii, densit...

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

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

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  12. (A): No work is done by the centripetal force acting on a body moving ...

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  13. Two springs with stiffness constants K(1) and K(2) (K(2) gt K(1)) are ...

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

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  15. A lorry and a car moving with the same momentum are brought to rest by...

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

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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. What happens when a metal spring dissolves in an acid?

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