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If you jerk a piece of paper under a boo...

If you jerk a piece of paper under a book quick enough, the book will not move. Why?

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MODERN PUBLICATION-Force-Exercise
  1. How is inertia related to mass of a body?

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  2. Why a fan continues to rotate for sometime even after it is switched o...

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  3. If you jerk a piece of paper under a book quick enough, the book will ...

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  4. Define the term momentum. Give its SI unit.

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  5. A bullet fired from a rifle is more dangerous than an air molecule hi...

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  6. How does Newton's first law of motion leads to the definition of force...

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  7. Is Newton's second law (F=Ma) always valid. Give an example in support...

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  8. The rate of change of momentum of a body is 5 kg ms^(-1). What is the ...

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  9. Give and state SI unit of force.

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  10. What is the difference between mN and nm ?

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  11. Action and reaction forces do not balance each other. Why?

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  12. What is impulsive force?

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  13. What is the net force on a cork floating on water?

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  14. Which is greater-the attraction of 10 kg mass for earth or the earth's...

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  15. A body is moving along a circular path such that its speed always rema...

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  16. State principle of conservation of momentum.

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  17. What is an impulse? How is it related to the change in momentum?

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  18. Can a body remain in state of rest, when external forces are acting on...

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  19. A body is acted upon by a number of external forces. Can it remain at ...

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  20. If net force acting on a body is zero, then will the body remain neces...

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