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Một vật rơi tự do từ một độ cao h. Biết rằng trong giây cuối cùng vật rơi được quãng đường 15m. Lấy g = 10 m/s2. Độ cao h là: A. 10 m B. 15 m C. 20 m D. 25 m.
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Một vật rơi tự do từ một độ cao h. Biết rằng trong giây cuối cùng vật rơi được quãng đường 15m. Lấy...
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