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Physics, 30.07.2021 03:50 symonya

cho một hệ gồm 2 vật chuyển động . Vật 1 có khối lượng 2 tổng động lượng của hệ khi v, hướng chếch lên trên hợp kg có vận tốc có độ lớn 4 m/s. Vật 2 có khối lượng 3 kg có vận tốc độ lớn là 2 m/s. Tính với vị góc 600

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cho một hệ gồm 2 vật chuyển động . Vật 1 có khối lượng 2 tổng động lượng của hệ khi v, hướng chếch l...
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