A train 300m long is travelling at a speed of 120 km/h how long Will it take to cross a bridge 200m long ?
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Answer:
Step-by-step explanation:
T= 15 s
the speed is v=72000m/3600s=20 m/s
For 60 m the train needs 3 s.
But the rest of the train on the bridge, which is 300 m - 60 m = 240 m, has to be taken in account:
which is 12 s (=240 m/20m/s).
The total time to cross the bridge = 12 s+3s=15 s
krishagoryani:
This answer is copied from https://www.quora.com/A-train-that-s-300m-long-is-running-at-a-speed-of-72-km-hr-In-what-time-will-it-cross-a-bridge-that-s-60m-long :-
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