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In which of the following exmples of mot...

In which of the following exmples of motion, can the body be considered approxinmately a point object :
(a) a railway carriage moving without jerks between two two stations.
(b) a mondey sistting on top of a man cycling smoothly on a circulat track. (c ) a spinning cricket ball that turns sharply on hitting the round . (d) a tumbling beake theat has slopped off the edge of a table ?

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a,b
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NCERT TAMIL-MOTION IN A STRAIGHT LINE-EXERCISES
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  3. A woman starts from her home at 9.00 a. m., walks with a speed of 5 km...

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  4. A drunkard walking in a narrow lane takes 5 steps forward and 3 steps ...

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  5. A jet airplance travelling at the speed of 500 km ^(-1) ejects its pr...

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  6. A car moving along a straight highway with speed of 16 kmh^(-1) is bro...

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  7. Two trains A and B of length 400 m each are moving on two parallel tra...

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  8. On a two lane road , car (A) is travelling with a speed of 36 km h^(-...

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  9. Two towns A and B are connected by a regular bus service with a bus le...

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  10. A player throwsa a ball upwards with an initial speed of 29.4 ms^(-1)...

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  11. Read each staremnt below carefully and state with reasons and expample...

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  12. A ball is dropped from a height of a height of 90 m on a floor. At eac...

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  13. Explain clearly, with ezamples, the difference between : (a) magnitu...

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  14. A man walks on a straight road from his home to a moardet 3 km away wi...

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  15. In abave questions 13 and 14, we have carefully distinguished betwee...

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  16. Look at the graphs (a) to (d) (Fig.) carefully and state, with reasons...

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  17. Find the value of x and y from the figure.

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  18. A police van moving on a highway with a speed of 30 km h^(-1) Fires a ...

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  19. Suggest a suitable physical situation for each of the following graphs...

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  20. Figure. gives the x-t plot of a particle executing one-dimensional sim...

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