- A45 km/h
- B47.52 km/h
- C13.2 km/h
- D49.5 km/h
Step-by-Step Solution
The train covers in 12.5 min the distance sound covers in 30 s: → m/s km/h.
Answer: B) 47.52 km/h
Two shots are fired from the same spot 13 minutes apart. A passenger on a train approaching the spot hears the second shot 12 minutes 30 seconds after the first. If sound travels at 330 m/s, what is the speed of the train?
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