Multiple choice

A train 125 m long travelling at a uniform speed passes a stationary man in 3.75 seconds. Find the speed of the train in km/hr.

  1. $120$ km/hr
  2. $140$ km/hr
  3. $160$ km/hr
  4. $180$ km/hr
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A Correct answer
Explanation

Speed = distance / time = 125 / 3.75 = 33.33 m/s. Convert to km/hr: 33.33 * (18/5) = 120 km/hr.

AI explanation

Using the formula Speed = Distance / Time, the speed of the train is 125 m / 3.75 s = 1/3 of 100, which equals 100/3 m/s. To convert this to kilometers per hour, multiply by 18/5 to get (100/3) * (18/5) = 120 km/hr. The speed of the train is 120 km/hr.

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