Question
A 200 m long train at the speed of 60 km/h crosses
another train as fast as twice the speed of first and running in opposite direction in 10 sec. Find the length of the second train.ÂSolution
ATQ, Speed of first train = 60 km/h = 16.67 m/s Speed of second train = Twice the first = 33.33 m/s Relative speed (opposite direction) = 16.67 + 33.33 = 50 m/s Total time to cross = 10 sec Using the formula: Total Distance = Relative Speed × Time (200+L)=50×10 = 500 L= 300 meters Hence, the length of the second train is 300 meters.
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