a train 300 m long can cross an electric pole in 30 sec and then find the speed of the train ?
"length = speed * time speed = l / t s = 300 / 30 s = 10 m / sec speed = 10 * 18 / 5 ( to convert m / sec in to kmph multiply by 18 / 5 ) speed = 36 kmph answer : d"
divide(divide(300, const_1000), divide(30, const_3600))