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Physics, 11.10.2021 21:30 ehamilton3

Một viên bi thả lăn không vân tốc đầu, từ đỉnh mặt phẳng nghiêng dài 30m. viên bi chuyển động nhanh dần đều với gia tốc 0,2m/s 1.hỏi bao lâu để viên bi đạt vận tốc 1m/s

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Một viên bi thả lăn không vân tốc đầu, từ đỉnh mặt phẳng nghiêng dài 30m. viên bi chuyển động nhanh...

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