Question

a 150 M long train is moving with a uniform velocity of 45 km per hour the time taken by the train to cross a bridge of length 850 M is

Answer 1

heya frnd 

distance to be travelled to cross bridge = length of train + length of bridge = 150+850 = 1000m 

velocity = 45 km /h  = 12.5 m/s 

speed = distance /time 

time = distance / speed  

        = 1000m / (12.5m/s)

t=80s