Multiple choice

A 180 m long train takes 15 seconds to cross a man standing on a platform. The speed of the train is :

  1. $10$ m/sec
  2. $12$ m/sec
  3. $15$ m/sec
  4. $20$ m/sec
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Speed = Distance / Time. The train covers its own length to pass a stationary point. Speed = 180 m / 15 s = 12 m/sec.

AI explanation

The speed is calculated using the formula speed equals distance divided by time. The distance is the length of the train, 180 meters, and the time is 15 seconds. Dividing 180 by 15 gives a speed of 12 meters per second.

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