Multiple choice

ஒரு இரயில் மணிக்கு 180 கி.மீ வேகத்தில் சென்று ஒரு மின்கம்பத்தை 9 நொடிகளில் கடக்கிறது. எனில் இரயிலின் நீளம் என்ன? A train goes at a speed of 180 km / h and crosses a power pole in 9 seconds. What is the length of the train?

  1. 450 மீ/ 450m

  2. 420 மீ/ 420m

  3. 445 மீ/ 445m

  4. 455 மீ/455 m

  5. இவற்றில் ஏதுமில்லை/None of these
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A Correct answer
Explanation

First, convert the speed of the train from km/h to m/s by multiplying by 5/18, which gives 180 * (5/18) = 50 m/s. Since the train crosses a stationary pole, the distance covered is equal to the length of the train, which is speed multiplied by time: 50 m/s * 9 seconds = 450 meters.

AI explanation

First, convert the train's speed from kilometers per hour to meters per second by multiplying by 5/18. The speed becomes 180 multiplied by 5/18, which equals 50 m/s. When a train crosses a stationary pole, the distance traveled is its own length, so we use the formula distance equals speed multiplied by time. Multiplying the speed of 50 m/s by the given time of 9 seconds gives a train length of 450 m. The length of the train is 450 m.

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