問題詳情
18..質量2公斤的物體，自高10公尺處自由落下，達地面一瞬間的功率為多少瓦特？
(A) 274.
(B) 582.0
(C) 297.
(D) 196.0
(A) 274.
(B) 582.0
(C) 297.
(D) 196.0
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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