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Physics, 03.01.2022 07:00 Irishstoner5608
2. Viên đạn khối lượng 10,0 g được bắn theo phương nằm ngang với tốc độ 300,0 m/s vào một khối gỗ khối lượng 5,00 kg đang đứng yên trên mặt bàn nằm ngang. Viên đạn cắm vào khối gỗ. Bỏ qua ma sát giữa khối gỗ và mặt bàn. Tốc độ của hệ khối gỗ và viên đạn ngay sau va chạm bằng
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2. Viên đạn khối lượng 10,0 g được bắn theo phương nằm ngang với tốc độ 300,0 m/s vào một khối gỗ kh...
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