Multiple choice

A 280 m long train moving with a speed 63 km/hr will pass a pole in

  1. 16 sec

  2. 27 sec

  3. 34 sec

  4. 38 sec

  5. 45 sec
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A Correct answer
Explanation

Speed = 63 km/hr = 63 * (5/18) m/s = 17.5 m/s. Time = Distance / Speed = 280 / 17.5 = 16 seconds.

AI explanation

First, convert the train speed from 63 km/hr to m/sec using the conversion factor of 5/18, which yields 17.5 m/sec. To pass a pole, the train must cover a distance equal to its own length of 280 m. Divide 280 by 17.5 to calculate the time, which results in 16 sec. The train will pass the pole in 16 sec.

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