Multiple choice

A 222-meter-long train crosses a pole in 6 seconds. The same train crosses a man running in the same direction in 10 seconds. What is the speed of the man?

  1. 14.8 m/sec

  2. 17.2 m/sec

  3. 18.2 m/sec

  4. 16.8 m/sec

  5. None of these
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A Correct answer
Explanation

Train speed = 222/6 = 37 m/sec. When crossing a man running in the same direction, relative speed = 222/10 = 22.2 m/sec. Man's speed = Train speed - Relative speed = 37 - 22.2 = 14.8 m/sec.

AI explanation

The train crosses a pole in 6 seconds, so its speed is calculated as 222 divided by 6, equaling 37 m/s. When crossing the man running in the same direction, the relative speed becomes 222 divided by 10, equaling 22.2 m/s. The relative speed of two objects moving in the same direction is the difference between their speeds; therefore, the man's speed is 37 minus 22.2, which equals 14.8 m/s.

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