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Physics, 25.10.2021 22:30 dsgSFkbed

Bài 2: Một ca nô chuyển động thẳng đều xuôi dòng từ A đến B mất Zh và khi ngược dòng từ B về A mất 3h. Hỏi nếu ca nổ tắt máy và để trôi theo dòng nước từ A đến B thì mất mấy giờ? Biết vận tốc ca nỏ so với nước không đổi khi đi xuôi và ngược, vận tốc của nước chảy cũng không đổi?

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Bài 2: Một ca nô chuyển động thẳng đều xuôi dòng từ A đến B mất Zh và khi ngược dòng từ B về A mất 3...

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