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 a toy car trav e24m.hb ayz bt0-qx2y- ,*dhmc*:nrgfq q)uleling along the x-axis. The graph shown below is a plot of the car’s velocity ) numg*hc d:rf*lqq -, 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
| 
