Question

a train of 150 m long is moving at 45 km/h. the time taken by the train to cross a 500 m long platform is ​

Answer 1

Velocity, v = 45 km/h * 5/18 = 12.5 m/s

Distance, s = 150 + 500 = 650 m

Time, t = ?

v = s/t

t = s/v

 = 650/12.5

 = 52 seconds

HOPE THIS HELPS ^_^

Answer 2

Answer:

Velocity = Displacement/Time. The train is moving with a uniform velocity of 45km/h means the train is moving 45km in 1 hour. Hence, the time taken by the train to cross a bridge of length 850 meters is 80 seconds.