Question

A train 150m long is running at a speed of 120 km/h. A man standing on the roof of the train
runs from one end of the train to the other end at 10 km/h in opposite direction. Find the
time taken by man to reach the other ends.

Answer 1

Since the man is running in opposite direction to the train, the relative speed = (120 + 10) km/hr = 130 km/hr. So, to cover the distance of 150 m or 0.15m, the man takes 0.15/130 = 0.001154 hr = 0,001154x360 secs = 4.1544 secs