Multiple choice

If a train with a speed of $60$ km/hr crosses a pole in $30$ seconds, what is the length of the train in metres ?

  1. $500$ m
  2. $1800$ m
  3. $200$ m
  4. $900$ m
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A Correct answer
Explanation

Speed = 60 km/hr = 60 * (5/18) m/s = 50/3 m/s. Length = speed * time = (50/3) * 30 = 500 meters.

AI explanation

To find the length of the train, we use the formula distance equals speed multiplied by time. We first convert the speed of 60 km/hr into metres per second by multiplying by 5 over 18, yielding 50 over 3 m/s. Multiplying this speed by the given time of 30 seconds results in a distance of 500 metres.

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