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When a branch of a tree is shaken, some ...

When a branch of a tree is shaken, some of the fruits may fall down. Why?

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LAKHMIR SINGH & MANJIT KAUR-FORCE AND LAWS OF MOTION-Exercise
  1. Why does a person in a bus tends to fall forward when it stops suddenl...

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  2. When a carpet is beaten with a stick, dust comes out of it, Explain.

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  3. When a branch of a tree is shaken, some of the fruits may fall down. W...

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  4. Explain why, it is dangerous to jump out of a moving bus.

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  5. What is the momentum in kg.m/s of a 10 kg car travelling at (a) 5 m/s ...

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  6. (a) Define momentum of a body. On what factors does the momentum of a ...

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  7. (a) Define the term 'force'. (b) State the various effects of force.

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  8. Give one example each where: (a) a force moves a stationary body. ...

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  9. (a) What do you understand by the terms "balanced forces" and "unbalan...

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  10. (a) What happens to the passengers travelling in the bus when the bus...

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  11. When a tooothpaste tube is squeezed, its shape changes. The force resp...

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  12. The inertia of an object tends to cause the object

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  13. When we talk of a force acting on a body, it usually means:

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  14. A passenger in a moving train tosses a coin which falls behind him. It...

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  15. When a carpet is beaten with a stick, dust comes out of it, Explain.

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  16. A water tanker filled up to two-thirds of its tank with water is runni...

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  17. If we release a magnet held in our hand, it falls to the ground. The f...

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  18. The inertia of a moving object depends on:

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  19. When a rubber balloon held between the hands is pressed, its shape cha...

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  20. Which of the following effect cannot be produced by an unbalanced forc...

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