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]
11.18: The motion of an object moving along c+xk ayd03+n ea k;2jlahgpkq wpjaq(;, (.*mt straight line is given by the velocity p2q.,;t;(qkj mag jla( wh*pk vs. time graph shown.
Which one of the following choices best represents the average acceleration of the object during the time interval from t=4.0 sto t=9.0 s?
A. $0.80 m/s^{2}$
B. 0
C. $-0.80 m/s^{2}$
D. $-1.60 m/s^{2}$
E. $-3.2 m/s^{2}$
参考答案: D
本题详细解析:
暂无
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