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Two trains, each 50 m long, are travelli...

Two trains, each `50 m` long, are travelling in opposite directions with velocities `10 ms^-1 and 15 ms^-1`. The time of their crossing each other is.

A

2sec

B

4sec

C

10sec

D

6sec

Text Solution

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The correct Answer is:
B
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MOTION-KINEMATICS-EXERCISE 1 OBJECTIVE PROBLEMS
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  13. A river has width 0.5 km and flows from West to East with a speed 30 k...

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  14. A boat man could row his boat with a speed 10 m/sec. He wants to take ...

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  15. A boat moves relative to water with a velocity v which is n times less...

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  16. A swimmer’s speed in the direction of flow of river is 16 km h^(-1). A...

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  17. A man crosses a river in a boat. If he cross the river in minimum time...

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  18. A man crosses the river perpendicular to river in time t seconds and t...

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  19. A swimmer crosses the river along the line making an angle of 45^(@) w...

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