Multiple choice

A train running at the speed of 72 km/hr crosses a pole in 25 seconds. What is the length of the train?

  1. 400 m

  2. 500 m

  3. 600 m

  4. 700 m
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Speed = 72 km/hr = 72 * (5/18) m/s = 20 m/s. Length of train = speed * time = 20 m/s * 25 s = 500 m.

AI explanation

Using the formula for converting speeds, 72 km/hr equals 72 x (5/18) = 20 m/s. When a train crosses a stationary pole, the distance covered is exactly its own length, calculated as Speed multiplied by Time. The length of the train is 20 m/s x 25 seconds = 500 m. The result is 500 m.

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