50 மீ நீளமுள்ள ஒரு இரயிலானது100 மீஅகலமுள்ள ஒரு ஆற்றை கடக்க பத்து நொடிகள்ஆகிறது. எனில் இரயிலின் வேகம் என்ன? A 50 m long train takes 10 seconds to cross a 100 m wide river. What is the speed of the train?

To cross the river, the train must cover its own length plus the width of the river, making the total distance 50 m plus 100 m, which equals 150 m. Using the formula for speed, we divide the distance by the time: 150 m divided by 10 s gives a speed of 15 m/s. To convert this to kilometers per hour, we multiply by 18/5, yielding 54 km/h. The speed of the train is 54 km/h.

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