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(a) State the law of conservation of mom...

(a) State the law of conservation of momentum.
(b) Discuss the conservation of momentum in each of the following cases :
(i) a rocket taking off from ground.
(ii) flying of a jet aeroplane.

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LAKHMIR SINGH & MANJIT KAUR-FORCE AND LAWS OF MOTION-Exercise
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  2. (a) State Newton's third law of motion and give two examples to illust...

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  3. (a) State the law of conservation of momentum. (b) Discuss the conse...

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  4. (a) If a balloon filled with air and its mouth untied, is released wit...

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  5. The rockets work on the principle of conservation of :

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  6. An object of mass 2kg is sliding with a constant velocity of 4ms^(-1) ...

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  7. The physical quantity which makes it easier to accelerate a small car ...

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  8. According to the third law of motion , action and reaction

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  9. The unit of measuring momentum of a moving body is :

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  10. A boy of mass 50 kg standing on ground exerts a force of 500 N on the ...

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  11. A Honda city car, a Maruti Alto car, a Tata Nano car and a Mahindra Sc...

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  12. The acceleration produced by a force of 5 N acting on a mass of 20 kg ...

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  13. Which of the following situations involves the Newton's second law of...

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  14. To catch a fast cricket ball, a player pulls his hands backwards. Why ...

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  15. Why are car seat-belts designed to stretch somewhat in a collision ?

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  16. The troops (soldiers) equipped to be dropped by parachutes from an air...

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  17. Why would an aircraft be unable to fly on the moon ?

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  18. Explain why it is possible for a small animal to fall from a considera...

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  19. A boy of mass 50 kg running at 5 m/s jumps on to a 20 kg trolley trave...

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  20. A girl of mass 50 kg jumps out of a rowing boat of mass 300 kg on to t...

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