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A train of certain length travelling with a uniform speed of 36kmhr crosses a bridge of 600m in 80 secfind the length of the train?
Wiki User
∙ 16y ago
200m. Here's the work:
The speed of the train in meters per second is:
(36km/hr)(1000m/km) / (3600s/hr) = 10 m/s
If it takes 80 seconds to cross, then the distance traveled in 80s at 10m/s is:
(10m/s)(80s) = 800m
Now, imagine this:
The front end of the train travels 800 meters from the time it reaches the bridge until the back end is clear of the bridge. This means that the length of the train equals the distance traveled minus the length of the bridge.
So:
800m - 600m = 200m
The train is 200m long.
Wiki User
∙ 16y ago
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