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In which of the following cases forces m...

In which of the following cases forces may not be required to keep the

A

Particle going in a circle

B

Particle going along a straight line

C

The momentum of the particle constant

D

Acceleration of the particle constant

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The correct Answer is:
C
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ERRORLESS -NEWTONS LAWS OF MOTION-Conservation of Linear Momentum and Impulse
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  2. A rocket has a mass of 100 kg . 90% of this is fuel. It ejects fuel va...

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  3. In which of the following cases forces may not be required to keep the

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  4. A wagon weighing 1000 kg is moving with a velocity 50 km//h on smooth ...

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  5. If a force of 250 N act on body, the momentum acquired is 125 kg -m//s...

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  6. A 100g iron ball having velocity 10m//s collies with a wall at an angl...

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  7. A ball of mass 150 g starts moving with an acceleration of 20m//s^(2)....

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  8. A body, whose momentum is constant, must have constant

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  9. The motion of a rocket is based on the principle of conservation of

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  10. A rope of length 5 m is kept on frictionless surface and a force of 5 ...

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  11. An aircraft is moving with a velocity of 300ms^(-1) . If all the forc...

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  12. A rocket of mass 1000 kg exhausts gases at a rate of 4 kg /sec with a ...

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  13. The momentum is most closely related to

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  14. Rocket engines lift a rocket from the earth surface because hot gas wi...

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  15. A man fires a bullet of mass 200 g at a speed of 5 m //s . The gun is ...

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  16. The bullet of 5 g is shot from a gun of mass 5 kg. The muzzle velocity...

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  17. A force of 50 dynes is acted on a body of mass 5 g which is at rest fo...

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  18. A body of mass M at rest explodes into three pieces, two of which of m...

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  19. The momentum of a system is conserved

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  20. A body of mass 0.25 kg is projected with muzzle velocity 100ms^(-1) fr...

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