Question

9. A train is 180 m long. If it runs at
a speed of 90 km/h, how long will
it take to pass an electric pole? Please answer​

Answer 1

Answer:

90 km/hr = 90 * 5/18

                = 25 m/sec.

So the time is taken by the train to pass an electric pole = (180/25)

                                                                                               = 7.2 sec.

Answer 2

Answer:

since the electric pole is a entity having negligible thickness the time taken by a train 180m long running at a speed of 90km/hr or 90000m/60 min =180*60/90000=0.12min or 7.2sec to pass the pole