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To keep a particle moving with constant ...

To keep a particle moving with constant velocity on a frictionless surface, an external force

A

Should act continuously

B

Should be a variable force

C

is not necessary

D

Should act opposite to the direction of motion

Text Solution

Verified by Experts

The correct Answer is:
C
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AAKASH SERIES-LAWS OF MOTION-EXERCISE - I
  1. In the above problem, the velocity attained by the particle in a certa...

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  2. You are on a frictionless horizontal plane. How can you get off if no ...

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  3. To keep a particle moving with constant velocity on a frictionless sur...

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  4. A force of constant magnitude starts acting on a moving particle when ...

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  5. A bird of mass 0.1 kg rising vertically with an acceleration 0.2 ms^(-...

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  6. The force exerted by the floor of an elevator on the foot of a person ...

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  7. A reference frame attached to the earth (a) is an inertial frame by...

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  8. (a) In a frame of reference S(1) though the net force is zero, the net...

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  9. Statement A : Action and reaction act on two different bodies Stat...

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  10. Statement A : When a person is on the floor of a lift which is at rest...

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  11. A man of mass m is on the floor of a lift. The lift moving up with acc...

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  12. A man of mass m is on the floor of a lift and lift is moving up with a...

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  13. A person of mass m is on the floor of a lift. The lift is moving down ...

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

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

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

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  17. Consider the following statements and identify the correct statements ...

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

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  19. A good lubricant should be highly

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  20. Theoretically which of the following are best lubricants

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