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An athlete runs a certain distance befo...

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

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An athlete always runs for some distance before taking a jump . So that inertia of motion may help him in his muscular efforts to take a longer jump.
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PREMIERS PUBLISHERS-LAW OF MOTION -OTHER IMPORTANT QUESTIONS & ANSWERS (III Short Answer Question )
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  2. Explain the use of air bags in cars during accidents.

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

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  4. Automobiles are provided with shock absorbers why

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

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

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  9. Define angle of friction

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

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  11. What is the need of banking a circular raod

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  12. How does the use of ball bearing reduces friction

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

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

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  15. Derive the expression for centripetal acceleration.

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  16. Explain centrifugal force due to rotation of the earth

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  17. What do you mean by inertia of motion? Give one example

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  18. What do you mean by inertia of direction? Give one example.

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

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

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