A train 150 m long travelling at 90 km per hour takes how long to pass a stationary pole?
Correct answer: B. 6 seconds
- A. 4 seconds
- B. 6 seconds
- C. 10 seconds
- D. 15 seconds
Explanation
Converting 90 km per hour by multiplying by 5 and dividing by 18 gives 25 m per second, and 150 divided by 25 is 6 seconds. To pass a pole the train covers only its own length, whereas passing a platform would require its length plus the platform's. Forgetting the unit conversion is the usual mistake.
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