a train 100m long is to cross a river of Bridge length 800m what time will it take to cross the bridge? The train move with a constant velocity of 36 km per hour
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a train 100m long is to cross a river of Bridge length 800m what time will it take to cross the bridge? The train move with a constant velocity of 36 km per hour
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Solution:-
Length of train=100m
Length of bridge=800m
So,Total Distance =800m+100m=900m
Speed =36km/h
In order to convert it in m/s we will multiple it with 5/18
So, Speed =10m/s
Now,
Time =?
Since we know that,
Therefore,
Time =90seconds
We can write it as 1min 30seconds
Hope it helps uh...✌️✌️✌️
Total distance required for the train to cross the bridge is,
d = (100 + 800) m = 900 m
The speed of the train is,
v = 36 km/h = 36 × 5 / 18 = 10 m/s
Hence the time taken to cross the bridge is,
t = 900 / 10 = 90 s.