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Physics, 13.09.2021 15:50 ConceitedD77

1 xe đi nửa đoạn đường đầu tiên với tốc độ trung bình v1=12km/h và nửa đoạn đường sau với tốc độ trung bình v2=20km/h .Tính tốc độ trung bình trên cả đoạn đường

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1 xe đi nửa đoạn đường đầu tiên với tốc độ trung bình v1=12km/h và nửa đoạn đường sau với tốc độ tru...

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