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Explain the use of air bags in cars duri...

Explain the use of air bags in cars during accidents.

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Cars are designed with air bags in such way that when the car meets with an accident the momentum of the passengers will reduce slowly . So that the average force acting on them will be smaller.
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PREMIERS PUBLISHERS-LAW OF MOTION -OTHER IMPORTANT QUESTIONS & ANSWERS (III Short Answer Question )
  1. What do you mean by inertia of direction? Give one example.

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  2. What is non inertial frame of reference? Explain with example.

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  3. With an example explaion a situatin where force and motion are not in ...

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  4. Explain the motion of a raindrop from a cloud

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  5. When a cricket player catches the ball he pulls his hand gradually in...

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  6. Explain the use of air bags in cars during accidents.

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  7. An athlete runs a certain distance before taking a long jump . Why ?

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  8. Automobiles are provided with shock absorbers why

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  9. Jumping on a cemented floor receives more injuries than on the sand ...

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  10. Explain the term maximal static friction

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  11. Given reason if he object is pressed hard on the surface where it is...

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  12. What is the angle of friction between two surfaces in contact if the ...

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  13. Define angle of friction

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  14. Given reasons for f(s)=mu(s)N

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  15. What is the need of banking a circular raod

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  16. How does the use of ball bearing reduces friction

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  17. When a bicycle moves in the forward direction what is the direction of...

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  18. A force can change the velocity of a particle in three different ways ...

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  19. Derive the expression for centripetal acceleration.

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  20. Explain centrifugal force due to rotation of the earth

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