本题目来源于试卷: Physics Unit11: Vibrations and Waves，类别为 国际高中通用物理
[单选题]
A mass is attached to a vertical spring and bobsxd;; .quxc w+l67yzeh up and down betwenw- (kkzasvi5 kt +8o;en points A and B. Where is the mass locatekw(ik; zov-8sn ta5+kd when its kinetic energy is a maximum?
A. at either A or B
B. midway between A and B
C. one-fourth of the way between A and B
D. none of the above
参考答案: B
本题详细解析:
暂无
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