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A train running at the speed of 60 km/hr crosses a pole in 9 seconds. What is the length of the train?

Difficulty: Easy

Correct Answer: 150 m

Explanation:

Given Data

  • Speed of the train = 60 km/hr
  • Time to cross a pole = 9 s
  • Required: length of the train

Step 1: Convert speed to m/s
60 km/hr = 60 × (5/18) = 16.6667 m/s


Step 2: Use distance = speed × time
Length = 16.6667 × 9 = 150 m


Checks & Common Pitfalls

  • Crossing a pole means the distance equals the train length only.
  • Always convert km/hr to m/s (× 5/18) before multiplying by seconds.

Final Answer
The train's length is 150 m.

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