Physics, 25.06.2021 19:50 Destinysills9325
Một phụ nữ bơi ngược một dòng suối vốn không chuyển động so với bờ. Bà ấy vốn có thực hiện công hay không? Nếu bà ta dừng bơi và chỉ thả nổi thì có công thực hiện trên bà ấy hay không?
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Một phụ nữ bơi ngược một dòng suối vốn không chuyển động so với bờ. Bà ấy vốn có thực hiện công hay...
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Mathematics, 04.07.2020 14:01
