Question

A 130 m long train is moving in up direction with speed
72 km/h. Another train of 120 m long is moving in down
direction with speed of 108 km/h. The time in which second
train crosses the first train will be

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Answer 1

Explanation:

relative speed is 180 km/h which is equal to 180 * 5/18 m/s

i.e. 50 m/s

the distance to be covered is equal to 250m. therefore time taken = 250/50 s

= 5 s