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μ €κ±° κ°‘μžκΈ° velocity μ†Œμˆ˜μ μ΄ μ—†μ–΄μ§€λ©΄μ„œ rigidκ°€ 움직이지가 μ•Šλ„€ γ… 


ν˜Ήμ‹œ 원인 μ§μž‘κ°€λŠ” μ‚¬λžŒ μžˆλ‚˜μš”? γ… 


velocity κ±΄λ“œλ¦¬λŠ” μ½”λ“œλž‘ rigid μƒνƒœλŠ” 사진에 μ˜¬λ €λ‘  γ