RRB JE practice question
A body covers a straight-line distance of 18 m from point A to B in 6 s, and then returns from B to A along the same path in 9 s. What is the average speed of the body for the entire journey?
From a RRB JE Science practice set · Science
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Correct answer: (B) 2.4 m/s
Average speed = total distance/total time = (18+18)/(6+9) = 36/15 = 2.4 m/s.
हिंदी में प्रश्न
एक वस्तु बिंदु A से B तक 18 मीटर की सीधी दूरी 6 सेकंड में तय करती है, और फिर उसी मार्ग पर B से A तक 9 सेकंड में लौटती है। पूरी यात्रा के लिए वस्तु की औसत चाल क्या है?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (B) 2.4 m/s
औसत चाल = कुल दूरी/कुल समय = (18+18)/(6+9) = 36/15 = 2.4 m/s.
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