Train Questions: Crossing a Pole/Tree

Question 01

In what time will a train 100 meters long cross an electric pole, if its speed be 144 km/hr.?

Given, Length of the train = 100 meter

                    Speed of the train = 144 km/hr.

                                                 = 144 x  (5/18)  meter/sec.   = 40 meter/sec.

Since, Speed of the train =   (Length of the train/ Time Taken to cross the pole)

    Therefore, Time taken    =     (Length of train/Speed of the train)

                                                = (100/40)  Sec.

                                                = 2.5 seconds.

Hence 2.5 seconds is the answer

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