本题目来源于试卷: Physics Bowl by Topic 2: Kinematics - part I General Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
97.20: This question refers to the motion of ,i8ala 6,y5dl8 goafxr9e p/m a toy car traveling al *)s 5vj0qtj ic8zq ki.ong the x-axis. The graph shown below is a plot jjq*c5 z0) st k.8iiqvof the car’s velocity in the x direction, $v_x$ versus time $t$.
During what time interval was the car moving towards its initial position at constant velocity?
A. 0-10 s
B. 10-20 s
C. 20-25 s
D. 25-30 s
E. 30-35 s
参考答案: D
本题详细解析:
暂无
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