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線速度v=S/t,角速度ω=弧度/t,由以上可推導出線速度v=ωr,求線速度,除了可以用v=S/t,也可推導出v=2πr/T(注:T為週期)=ωr=2πrn(注:n代表轉速,n與可以T可以互相轉換,公式為T=1/n),π代表圓周率…
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