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A ball hits a wall with a velocity of 30...

A ball hits a wall with a velocity of `30 ms^(-1)` and rebounces with the same velocity. What is the change in its velocity ?

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SL ARORA-MECHANICS-Exercise
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  2. What is the numberical ratio of velocity to speed of an object ?

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  3. A ball hits a wall with a velocity of 30 ms^(-1) and rebounces with th...

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  4. Unit of time occurs twice in unit of acceleration. Why ?

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  5. Statement-I : A positive acceleration can be associated with a 'slowin...

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  6. Give an example which shows that a negative acceleration can be associ...

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  7. Is the acceleration of a car greater when when the accelerator is push...

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  8. The v-t graphs of two objects make angles of 30^circ and 60^circ with ...

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  9. Is it possible that your cycle has a northward velocity but southward ...

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  10. If the instantaneous velocity of a particle is zero, will its instanta...

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  11. A man standing on the edge of a cliff throws a stone straight up with ...

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  12. A body travels along a straight line with uniform accleration a(1) fo...

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  13. What is the nature of the distance-time graphs for uniform and non-uni...

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  14. what does slope of prosition-time graph represeent for a unitorm motio...

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  15. The slope of velocity-time graph for uniform motion of an object is

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  16. If the displacement-time of a particle is parallel to (b) displacement...

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  17. If the displacement-time graph for a particle is parallel to time-axis...

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  18. How can the distance travelled is calculated from velcity-time graph i...

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  19. The area under acceleration-time graph gives

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  20. What is the area under the velocity-time curve in the case of a body p...

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