SSC GD Constable previous year question
Two objects A and B of mass 2 kg and 3 kg respectively are dropped from different heights. A takes 5 seconds and B takes 3 seconds to touch the ground. What is the ratio of their kinetic energy with which they hit the ground?
Asked in SSC GD Constable 2025: 05 Feb 2025 Shift 3 (Evening) · General Awareness
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Correct answer: (C) 50/27
KE = ½m(gt)²; ratio = (2×25)/(3×9) = 50/27, using fall times 5s and 3s for masses 2kg and 3kg.
हिंदी में प्रश्न
क्रमशः 2 kg और 3 kg द्रव्यमान वाली दो वस्तुओं A और B को अलग-अलग ऊँचाई से गिराया जाता है। धरातल को स्पर्श करने में A को 5 सेकंड और B को 3 सेकंड लगते हैं। उनकी उस गतिज ऊर्जा का अनुपात कितना है जिससे वे धरातल से टकराते हैं?
उत्तर जाँचने के लिए किसी विकल्प पर टैप करें।
उत्तर और व्याख्या देखें
सही उत्तर: (C) 50/27
KE = ½m(gt)²; अनुपात = (2×25)/(3×9) = 50/27, द्रव्यमान 2kg और 3kg के लिए गिरने का समय 5s और 3s उपयोग करने पर।
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