Question
A train crosses a man walking in the opposite direction
at 6 km/h in 12 seconds. If the length of the train is 180 m, what is the speed of the train?Solution
Relative speed = 180/12 = 15 m/s Convert to km/h: 15 x 18/5 = 54 km/h Since man is moving in opposite direction: Train speed + 6 = 54 Train speed = 48 km/h
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