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kenghia77
2 năm trước
giúp mình bài với mọi người Hai vật có khối lượng m1, m2 chuyển động trên mặt phẳng ngang không ma sát với các vận tốc v1 v2 sau va cham hai vật nhập thành một chuyển động với cùng vận tốc,khảo sát sự biến thiên động năng của hệ biết m1=5kg ,m2=6kg, v1=10m/s, v2=12m/s
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