Question

a 200 m long train crosses a 400m long bridge with speed of 36km/h. calculate the time taken by train to cross the bridge

Answer 1

The total distance it needs to cross the bridge is the length of bridge and the length of train itself = 400+200 = 600m

Given Speed = 36km/hr = 36*5/18 m/s = 10m/s

So it takes Time= distance/speed
=600m/10ms^-1
= 60s or 1min