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5.若一運動物體的速度函數v(t) = 3 - t2,則此物體在時刻t = 3的瞬時加速度為 (A) - 6 (B)6 (C) - 5 (D) - 4
問題詳情
5.若一運動物體的速度函數v(t) = 3 - t2,則此物體在時刻t = 3的瞬時加速度為
(A) - 6
(B)6
(C) - 5
(D) - 4
參考答案
答案:A
難度:適中0.5
統計:A(0),B(0),C(0),D(0),E(0)
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