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Two stations A and B are 2km apart. A tr...

Two stations A and B are 2km apart. A train moves at first with a uniform acceleration `a_(1)` and then with a uniform retardation `a_(2)` to travel the distance AB in 4 min.Then

A

`a_(1) +a_(2) = 2a_(1)a_(2)`

B

`(1)/(a_(1))+(1)/(a_(2))=(1)/(2)`

C

`a_(1)+a_(2)=4a_(1)a_(2)`

D

`a_(1)+a_(2) = 2 sqrt(a_(1)a_(2))`

Text Solution

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The correct Answer is:
C
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CHHAYA PUBLICATION-ONE - DIMENSIONAL MOTION -EXERCISE (Multiple Choice Questions)
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  2. A car starts from rest and travels a distance s with a uniform acceler...

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

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

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

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

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

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

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

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

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

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

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  13. A stone is falling freely. The distance travelled in the last second i...

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  14. A stone is thrown vertically upwards from some high point P. The veloc...

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  15. A hail drop is falling freely due to gravity. It travels distance h(1...

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  16. A parachute is dropped from an aeroplane. The parachute opens after 10...

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  17. A body falls freely from a certain height. It takes times t(1) and t(2...

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  18. A small cube falls from rest along a frictionless inclined plane. If t...

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  19. The area under velocity-time graph for a particle in a given interval ...

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  20. Which one of the following displacement-time graphs represents one dim...

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