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Physics, 13.09.2021 20:40 jamalchris9353

hai otoo cùng chuyển động đều trên dường thẳng nếu 2 ô tô đi ngược chiều thì cứ 20p khoảng cách của chúng giảm đi 30km nếu chúng đi cùng chiều thì cứ 10p khoảng cách của chúng giảm đi 10km. tính vận tốc mỗi xe

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