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Two trains are each 50 m long moving par...

Two trains are each 50 m long moving parallel towards each other at speeds `10 ms^(-1)` and `15 ms^(-1)` respectively, at what time will they pass each other ?

A

8s

B

4 s

C

2 s

D

6 s

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The correct Answer is:
B
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AAKASH SERIES-MOTION IN A STRAIGHT LINE -EXERCISE -II
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  8. The position of and object moving along x-axis is given by x=a +bt^(2)...

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  9. The displacement x of a particle moving in one direction is given by t...

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

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  11. Two trains, which are moving along different tracks in opposite direct...

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  12. A car accelerates from rest with 2 m // s^(2) on a straight line path ...

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  13. A body falls from 80 m. Its time of descent is [g = 10 ms^(-2)]

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  14. Two bodies whose masses are in the ratio 2:1 are dropped simultaneousl...

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  15. A body falls for 5 s from rest. If the acceleration due to gravity of ...

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  16. A body freely falling from a height h describes (7h)/16 in the last se...

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  17. A body released from the top of a tower of height h takes T seconds to...

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  18. The ratio of times taken by freely falling body to cover first metre, ...

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  19. A body is droped from a height 122.5 m. If its stopped after 3 seconds...

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  20. A freely falling body travels of total distance in 5th second

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