Question

Two trains, each of length 100m, are running on parallel tracks. One overtakes the other in 20 seconds and one crosses the other in 10 seconds. Calculate the velocity of each train.

Answer 1

Hello mate,

Here is your answer,

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Let u & v be the velocity of the two trains named A & B.

While overtaking the relative velocity of train A with respect to B = u - v.

While crossing, the relative velocity of train A with respect to B = u + v.

Total distance to be travelled by Train A while crossing = 100 + 100 = 200.

So,

= 200 ÷ u-v

=> u - v = 10....1)

Also,

10 = 200 ÷ u + v

=> u + v = 20.......2)

On solving the equation 1 & 2, we get;

u = 15 M/S of the train A / First Train.

v= 5 M/S of the train B / Second Train.

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HOPE THIS HELPS UU :)

AND STAY BLESSED.

Answer 2

__________v = 5 m/s___________

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____Answer is in Attachment !!______



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Hope it helps...

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