Multiple choice

A train traveling at a speed of 90 kmph crosses a pole in 10 seconds. The length of the train is

  1. 250 m

  2. 150 m

  3. 900 m

  4. 100 m
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A Correct answer
Explanation

Speed = 90 km/hr = 90 * 5/18 = 25 m/s. Time = 10s. Length = Speed * Time = 25 * 10 = 250 m.

AI explanation

Convert the train speed from 90 kmph to m/sec by multiplying by 5/18, which gives 25 m/sec. The formula for distance is speed multiplied by time, so multiply 25 m/sec by the given time of 10 seconds. The product is 250 m. The length of the train is 250 m.

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