A railway train 200 meter long, pass over a bridge 800 meter long. What is the time taken to cross the bridge when it is moving with the uniform velocity of 36 km/h?
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total distance= 200+800=1000m=1km
velocity/speed=36km/hr=36*5/18=10m/s
speed= distance/time
time= distance/ speed
time= 1km/36km per hr Or 1000/10
time=1/36 hr or 100 min
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