a train 100 m long is moving with a constant velocity of 60 kmh​-1 find the time it takes to cross the bridge 1 km long   

Dear student,
Length of the bridge=1Km=1000mLength of the train = 100mTotal distance=1000+100=1100mSpeed of the train=60Km/hr=60×518=16.66m/stime=distancespeed=110016.66=66.07sec

Regards

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