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A person covers half of his path at a sp...

A person covers half of his path at a speed of 30 `"km.h"^(-1)` and the remaining half at 40 `"km.h"^(-1)` . His average speed is

A

35 `"km.h"^(-1)`

B

60 `"km.h"^(-1)`

C

34.3 `"km.h"^(-1)`

D

50 `"km.h"^(-1)`

Text Solution

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The correct Answer is:
C
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CHHAYA PUBLICATION-ONE - DIMENSIONAL MOTION -EXERCISE (Multiple Choice Questions)
  1. A vehicle is moving with a uniform speed of 18 "km.h"^(-1) . The dista...

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  2. Distance travelled by a particle in motion is directly proportional to...

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  3. A person covers half of his path at a speed of 30 "km.h"^(-1) and the ...

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  4. Starting from rest a car moves for sometime with a constant accelerati...

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  5. Displacement (x) and time (t) of a particle in motion are related as x...

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  6. The motion of a particle is described by the equation v = at. The dist...

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  7. A particle starting from rest with constant acceleration travels a dis...

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  8. The displacement of a particle is given by y = a +bt+ct^(2)+dt^(4). Th...

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  9. The displacement of a particle starting from rest (at t = 0) is given ...

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  10. A car starts from rest and travels a distance s with a uniform acceler...

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  11. Two stations A and B are 2km apart. A train moves at first with a unif...

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  12. A car moves with a uniform velocity of 36 "km.h^(-1) on a straight roa...

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  13. Two scooters start at an interval of 1 min between them, each moving w...

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  14. A passenger in a train with speed 72 km/h observed another train comi...

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  15. A runner wins a race in front of another runner. The uniform accelera...

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  16. A body is thrown vertically upwards at 40 "m.s"^(-1) . After sometime ...

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  17. A body freely falling from rest has a velocity v after it falls throug...

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  18. A ball is thrown vertically upward with a speed v from a height h abo...

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  19. A body A is thrown up vertically from the ground with a velocity v(0) ...

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  20. A stone is dropped from a height h. Another stone is thrown simultaneo...

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