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 lzy5 8q.o4ahbp xz;y- an objec obijt.88(zal c ok+ .kd -v 47vtbkd)tt moving along a straight line is given by the velocit .j(vb8tkdz d)v7k8+ b.ito a4 -lk octy vs. time 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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