Multiple choice

How many seconds, a train of 100 meters in length running at the rate of 36km/hr will take to pass a certain telegram post?

  1. 12 seconds

  2. 118 seconds

  3. 10 seconds

  4. 15 seconds
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Speed = 36 km/hr. Convert to m/s: 36 × (5/18) = 10 m/s. Time to pass a telegram post = Length / Speed = 100 / 10 = 10 seconds. The train needs to cover its own length completely to pass the post.

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