How does a train, 200m long, travelling at a speed of 81km/h takes to cross a stationary train250 m long
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Given :
Length of train = 200 m
Speed of train = 81 km/h = 45/2 m/s
Length of stationary train = 250 m
To find :
Time taken by train to cross stationary train
Solution :
Total distance, d = 200 + 250 m
d = 450 m
We know that,
Speed = distance / time
Time, t = Distance / speed
t = 450/ (45/2) = 450 × 2 / 45
t = 10×2
t = 20 sec
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