Physics, 04.11.2021 18:10 maggiemae4993

Một vật rắn khối lượng 1 kg, chuyển động tịnh tiến ở độ cao 2 m so với mặt đất. Vật rắn có vận tốc khối tâm là 4 m/s. Chọn gốc thế năng tại mặt đất. Lấy 2 9, 8 / g m s = . Tính cơ năng của vật rắn
A. 8 J. B. 19,6 J. C. 27,6 J. D. 28 J.

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Một vật rắn khối lượng 1 kg, chuyển động tịnh tiến ở độ cao 2 m so với mặt đất. Vật rắn có vận tốc...

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