Question
Train A (180 m) runs at 60 km/h. Train B (270 m) runs at
90 km/h in the opposite direction. Find the time taken to cross each other completely.Solution
Relative speed = 60 + 90 = 150 km/h = 150 × 1000 / 3600 = 41.67 m/s. Distance = 180 + 270 = 450 m. Time = 450 / 41.67 = 10.8 s.
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