問題詳情
13.地球半徑為 R，表面的重力場強度為 g，今欲將一物鉛直上拋，使能脫離地球束縛而飛向無窮遠處，則拋出初速至少為：
(A)
(B)
(C)
(D)
(E)
(A)
(B)
(C)
(D)
(E)
參考答案
答案：B
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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