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Physics, 17.10.2021 07:30 brendaesme
giả sử hạt mưa rơi theo phương thẳng đứng với vận tốc 3 m trên giây người điều khiển xe gắn máy chạy trên mặt đường nằm ngang với vận tốc 4 m trên giây xác định vận tốc của hạt mưa đối với người điều khiển xe
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giả sử hạt mưa rơi theo phương thẳng đứng với vận tốc 3 m trên giây người điều khiển xe gắn máy chạy...
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