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Physics, 27.08.2021 17:20 ghlin96

bạn đang đứng trên một tấm đá nằm trên một hồ nước đóng băng. Giả sử không có ma sát giữa tấm đá và hồ băng. Phiến đá có trọng lượng gấp 5 lần trọng lượng của bạn. nếu bạn bắt đầu đi về phía trước với vận tốc 3,5 m/s so với mặt băng, thì phiến dá sẽ chuyển động với tốc đọ bao nhiêu

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