gonzmari457
25.11.2021 •
Physics
tác dụng 1 lực Fx=-(3x^2+1) để hãm vật khối lượng 2kg đang chuyển động thẳng theo trục ox tuwfd vị trí x=2 m cho đến khi dừng lại tại vị trí x=4 m . tốc đọ của vật tại vị trí x=2 m bằng .
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