A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. the speed of the train is:
A train 125 m long passes a man, running at 5 km/hr in the same direction in which the train is going, in 10 seconds. the speed of the train is:
(a) 45 km/hr (b) 50 km/hr (c) 54 km/hr (d) 55 km/hr
length of train =125 m time to pass a man=10 seconds the speed of the train calculated will be=(125/10)(metre/second); now by converting it into km/hr we divide speed by (5/18) speed of train=(125/10)*5/18=45 km/hr;