Question

a train 100m long is to cross river of bridge of length 800 metre what time will it take to cross the bridge the train moves with a constant velocity of 36 kilometre per hour​

Answer 1

Answer:

Total distance (of train with river bridge)=100+800=900m

velocity =36km/hr=10 m/s

there for time take by the train to cross the bridge =

v=s/t

t=s/v

t=900/10

t=90 sec

t=1 min 30 sec

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Answer 2

Explanation:

Solution,

Sum of length of bridge and train = 900m

Velocity = 36 km/h = 10 m/s

So, time = 900/10 = 90s

Hope its help you.