Question

A train 110 metres long is running with a speed of 60 kmph. In what time will it pass a man who is running at 6 kmph in the direction opposite to that in which the train is going?

Answer 1

Speed of train relative to man running = (60 + 6) km/hr = 66 km/hr = 66x5/18 
                                                     = 55/3 m/sec


Hence,time taken by the train to pass the man = 110 x 3/55 = 6 sec.