A jogger running at 9 kmph alongside a railway track in 240 metres ahead of the engine of a 120 metres long train running at 45 kmph in the same direction. In how much time will the train pass the jogger?
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Speed of train relative to jogger = (45 - 9) km/hr = 36 km/hr.
Speed in m/sec = 36 x 5/18 = 10m/sec
Distance to be covered = (240 + 120) m = 360 m.
Hence,time taken by the train to pass the jogger = 360/10 = 36 sec
Speed in m/sec = 36 x 5/18 = 10m/sec
Distance to be covered = (240 + 120) m = 360 m.
Hence,time taken by the train to pass the jogger = 360/10 = 36 sec
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