a train 100m long is to cross a river of bridge of length 800m. what time will it take to cross the bridge? the train moves with a constant velocity of 36km/h.
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The overall distance =900m
speed of train=36×5/18=10m/s
so time =900/10
=90second
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Answer:
Explanation:
Here is the answer 't' = 90 sec.
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