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How many seconds does it take for a 300m long train to pass through a 2000m long tunnel at the speed of 72km / h, and how long does it take for the whole train to pass through the tunnel
130S
It takes 50 seconds for a train to pass through a 500 meter long tunnel. The body of the train is 100 meters long, so the speed of the train can be calculated
(500+100)/50=12m/s
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