How long does it take for a train to pass a 400 m long tunnel if the train is 100 m long and the speed is 36 km / h?

univerkov | December 16, 2020 | education

400 m + 100 m = 500 (m)
36 km / h = 36000m ÷ 3600s = 10 m / s
s / v = t
We find the time by the formula:
500 m ÷ 10 m / s = 50 seconds
Answer: the train will pass the tunnel in 50 seconds.

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