本题目来源于试卷: Simple Harmonic Motion: Parameters and Typical Relationship，类别为 美国物理杯赛(Physics Bowl)
[单选题]
11.19: The motion of an objec z5ibr:e dnu : ayey/40t moving along a straight i n h*0lhk 8uz.lp yic.cf8t/5line is given by the velocity vs. time .h5tp8 i0lzciyfh/8*.n k c ul graph shown.
Which one of the following choices best represents the instantaneous acceleration of the object at the time of t=5.0s?
A. 0
B. $- 1.6 m/s^{2}$
C. $- 2.0 m/s^{2}$
D. $- 3.2 m/s^{2}$
E. $- 4.0 m/s^{2}$
参考答案: E
本题详细解析:
暂无
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