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thuynguyenbien55
2 năm trước
Một quả bóng được đá đi từ mặt đất với tốc độ 20 m/s tạo với phương ngang một góc 300 . Bao lâu thì bóng chạm đất? A. 2,20 s. B. 2,04 s. C. 1,02 s. D. 1,40 s.
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