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Physics, 16.10.2021 19:50 kayladianemmp6qhfa
Một người đi bộ đều quãng đường đầu dài 3km với vận tốc 2m/s. Ở quãng đường tiếp theo dài 1,95km người đó đi hết 0,5h. Tính vận tốc trung bình của người đó trên cả hai quãng đường.
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Một người đi bộ đều quãng đường đầu dài 3km với vận tốc 2m/s. Ở quãng đường tiếp theo dài 1,95km ngư...
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