Question

a bridge is 500 long a 100 m long train crosses the bridge at a speed of 30ms2 calculate time taken by train to cross it [20 seconds]

Answer 1

Distance of bridge = 500 m
Length of train = 100 m
Total Distance to be covered = Distance of bridge + Length of Train
= 500 m + 100 m
= 600 m

Speed of train = 30 m/s

​Time = Distance
Speed
= 600
30
= 20 seconds