Question

A 200 m long train crosses a 400 m bridge with a velocity of 36 km/h. Find the time

taken by the train to cross the bridge.​

Answer 1

Length of the train=200/1000km

Length of the bridge=400/1000km

Distance to be covered=0.4-0.2km=0.2km

speed = 36km/hr

time=0.2km/36km/hr=1/180hr=1/180*60*60=20 sec