Question
Two trains of lengths 180 m and 120 m move in opposite directions at 54 km/h and 36 km/h. Time to cross each other?
Solution
ATQ, 54 km/h = 15 m/s, 36 km/h = 10 m/s Relative speed = 25 m/s Total length = 300 m Time = 300/25 = 12 s
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