A 100-meter-long train needs 30 seconds to cross a 400-meter-long bridge. Assuming the train goes at a steady speed, how fast is it?
Great, you answered "48 km/h".
See here what other people have answered:
- 45 km/h
- 48 km/h
- 54 km/h
- 60 km/h
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Interesting fact:
Germans may be famous for their punctuality, but Japan takes it to a whole new level: If a train is late for five minutes, you will get a delay certificate, a delay for more than an hour will make the news. The engineer who designed the Bullet train was actually responsible for designing the Kamikaze dive-bombing planes. The secure method of transportation was his way of doing penance.