Question

A bridge is 500 m long a 100 m train cross the bridge at the speed 30m/s how much time was taken by the train to cross the bridge

Answer 1

length of the train =100m

length of the platform=500m

total distance covered =100m+500m=600m

time taken to cross the bridge =600/30m=20m/s

so it takes 20 seconds to cross the bridge