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A train covers the first half of the dis...

A train covers the first half of the distance between two stations at a speed of `40 km//h` and the other half at 60km/h. Thenits average speed :-

A

50 km/h

B

48km/h

C

52km/h

D

100km/h

Text Solution

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The correct Answer is:
B
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ALLEN -MOTION IN A PALNE-EXERCISE-2
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  3. A train covers the first half of the distance between two stations at ...

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  4. A particle is moing with a velocity of 10m//s towards east. After 10s ...

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  8. If a car at rest, accelerates uniformly to a speed of 144 km//h in 20s...

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  9. A body starts from rest, what is the ratio of the distance travelled b...

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  10. The intial velocity of a particle is u (at t=0) and the acceleration i...

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  11. If a body starts from rest and travels 120 cm in the 6 second then wha...

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  12. If a train travelling at 72 km/h is to be brought to rest in a distanc...

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  13. A car moving with a speed of 40 km//h can be stopped by applying the b...

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  14. If a body starts from rest and travels 120 cm in the 6 second then wha...

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  15. A car moving with a velocity of 10m/s can be stopped by the applicatio...

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  19. The position vector of a particle is given by vecr=vecr(0) (1-at)t, wh...

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