Multiple choice

If a train, travelling at a speed of 90 kmph, crosses a pole in 5 sec, then the length of train is?

  1. 104

  2. 140

  3. 125 m

  4. 153
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Speed = 90 kmph = 90 * (5/18) m/s = 25 m/s. Distance = Speed * Time = 25 m/s * 5 s = 125 m.

AI explanation

First, convert the speed of the train from kmph to m/sec by multiplying by 5/18, making the speed 90 * 5/18 = 25 m/sec. The formula for crossing a stationary pole is distance equals speed multiplied by time. Therefore, the length of the train is 25 m/sec * 5 sec = 125 m.

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