本题目来源于试卷: 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 a straight line l0d gz)tf ovi75)ra:t i 4 t/btl25io(mdxf+t1c v/ycas given by the velocity vs. time graph shown.
xc5tb+/1mfocli4/ dtv2ya (t 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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