問題詳情
1.（ ）一顆5公克的子彈在平滑無摩擦的槍管中前進時，在0.01秒內其速度由0公尺／秒變為150公尺／秒，在此瞬間子彈受到的平均力為多少牛頓？
(A)
(B)
(C)
(D)150。
(A)
(B)
(C)
(D)150。
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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