Question

a train 350 long crosses an electric polein 28 seconds.find the speed of the train in km/hr

Answer 1

the trian crosses an electric pole in 28s.the train's length is 350m and so the distance itself 350m
speed of train =total distance/time
=350/28
=175/14m/s
in km/h=175/14 × 18/5
=45km/h
hope it helps.......