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In which of the following examples of mo...

In which of the following examples of motion, can the body be considered approximately a point object:
(a) a railway carriage moving without jerks between two stations.
(b) a monkey sitting on top of a man cycling smoothly on a circular track.
(c) a spinning cricket ball that turns sharply on hitting the ground.
(d) a tumbling beaker that has slipped off the edge of a table.

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a,b
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NCERT BANGLISH-MOTION IN A STRAIGHT LINE-EXERCISES
  1. In which of the following examples of motion, can the body be consider...

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  2. The position-time (x-t) graphs for two children A and B returning from...

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  3. A woman starts from her home at 9.00 am, walks with a speed of 5 km h^...

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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 airplane travelling at the speed of 500 km h^(-1) ejects its pro...

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  6. A car moving along a straight highway with speed of 126 km h^(-1) is b...

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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^(-1). ...

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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 throws a ball upwards with an initial speed of 29.4 ms^(-1). ...

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  11. Read each statement below carefully and state with reasons and example...

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  12. A man walks on a straight road from his home to a market 2.5 km away w...

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  13. We have carefully distinguished between average speed and magnitude of...

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

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  15. Figure. shows the x-t plot of one-dimensional motion of a particle. Is...

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

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

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

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  19. Figure. gives the x-t plot of a particle in one-dimensional motion. Th...

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  20. Figure. gives a speed-time graph of a particle in motion along a const...

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