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Statement A : If the force varies with t...

Statement A : If the force varies with time in a complicated way then the average force is measured by the total change in momentum of the body
Statement B : Change in momentum and impulsive force are numerically equal

A

A & B are true

B

A & B are false

C

A is true and B is false

D

A is false & B is true

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The correct Answer is:
C
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AAKASH SERIES-LAWS OF MOTION-EXERCISE - I
  1. A person of mass m is on the floor of a lift. The lift is moving down ...

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  2. Statement A : If the lift is falling freely then the man on its floor ...

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  3. Statement A : If the force varies with time in a complicated way then ...

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  4. Statement A : Shock absorbers reduce the magnitude of change in moment...

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  5. Two blocks A and B of the same mass and surface finish are sliding on ...

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  6. A good lubricant should be highly

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  7. Theoretically which of the following are best lubricants

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  8. A block of mass'm' is resting on the floor of a lift. The coefficient ...

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  9. When a moving body is suddenly stopped a long time after coming to res...

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  10. A block 'B' rests on 'A'. A rests on a horizontal surface 'C which is ...

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  11. Sand is dusted on the railway tracks during rainy season to

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  12. Which of the following are correct for rolling friction

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  13. If an external force and the frictional force acting on a body cancel ...

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  14. Which of the following statements is not true ?

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  15. When normal reaction is halved the coefficient of friction is

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  16. Match the items mentioned in the lists I and II below LIST -1 a) S...

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  17. With increase of temperature, the frictional force acting between two ...

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  18. If we imagine two ideally smooth surfaces & if they are kept in contac...

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  19. The angle made by the resultant of normal reaction and limiting value ...

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  20. Two bodies of different masses are dropped simultaneously from same he...

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