RRB Technician Grade 3 previous year question
An object has a mass of 12 kg and moves with a constant speed of 8 m/s. How much kinetic energy does it have?
Asked in RRB Technician Grade 3 (10 Mar 2026 Shift 1) · Science
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Correct answer: (D) 384 J
Kinetic energy KE = ½mv² = 0.5 × 12 × 8² = 0.5 × 12 × 64 = 384 J.
हिंदी में प्रश्न
यदि किसी वस्तु का द्रव्यमान 12 kg है तथा यह 8 m/s की नियत चाल से चल रही है, इसकी गतिज ऊर्जा ज्ञात कीजिए।
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (D) 512 J
गतिज ऊर्जा KE = ½mv² = 0.5 × 12 × 8² = 0.5 × 12 × 64 = 384 जूल होती है।
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