800 மீ நீளமுள்ள ரயில் மணிக்கு 72 கிமீ வேகத்தில் செல்கிறது. அது ஒரு குகையை ஒரு நிமிடத்தில் கடக்கிறது எனில் கையின் நீளம் என்ன? The 800 m long train goes at 72 km / h. What is the length of the train if it crosses a cave in a minute?

The speed of the train is 72 km/h, which we convert to meters per second by multiplying by 5/18, giving 20 m/s. We assume the question asks for the length of the cave, as the train's length is already given as 800 m. Let the length of the cave be C. The total distance covered in one minute, or 60 seconds, is 800 + C, so 800 + C = 20 * 60 = 1200. Solving for C gives 400 meters. The length of the cave is 400 m.

• Thanks
• Wrong explanation