- A80 s
- B60 s
- C56.8 s
- D36.6 s
Step-by-Step Solution
41 vehicles have 40 couplings: length m. Distance m at 12.5 m/s → 60 s. (56.8 s forgets the couplings.)
Answer: B) 60 s
A goods train has an 18 m engine and 40 wagons of 11 m each, with 1 m couplings between all neighbouring vehicles. At 45 km/h, how long does it take to clear a 252 m platform?
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