問題詳情
6. 一網球與牆面碰撞情形如右圖所示，若初速為20 m/s，球與牆接觸時間為0.02 s，則在接觸期間球之平均加速度量值約為多少？(因接觸時間極短，所以碰撞瞬間鉛直速度視為無變化。)
(A)
(B)
(C)
(D)
(E)
m／s2 
(A)
(B)
(C)
(D)
(E)
m／s2
參考答案
答案：[無官方正解]
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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