A train 350 metres long crosses an electric pole in 28 sec .find the speed of the train in km/hr
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Time = Distance / speed
Speed = Distance / Time
Distance = 350m
Time = 28 seconds
Speed = 350/28 = 12.5 m/s
We need this speed in km/h
We convert it as follows :
12.5 × 18/5 = 45 km/h
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