問題詳情
20.質量m的木塊沿水平碰撞力常數k的彈簧，彈簧被壓縮d的長度，且木塊和地面之摩擦係數，則木塊碰到彈簧時之速率為：
(A)
(B)
(C)
(D)
(E)
(A)
(B)
(C)
(D)
(E)
參考答案
答案：D
難度：非常困難0
統計：A(0),B(0),C(0),D(0),E(0)
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