Question

in what time a train of 400 meter long running at the rate of 72 km/h take to pass a pole??​

Answer 1

Answer:

Conversion factor to convert kmph(kilo metres per hour) into mps(metres per second) is5/18

So 72 kmph = 72*5/18 = 4*5 = 20 mps

Cross an electric pole means crossing the length of train itself

length of train or distance to travel = 400m and speed=20 mps

time to cross the electric pole = 400/20 = 20s

Explanation:

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