Physics Bowl by Topic 2: Kinematics - part I General Motion (id: 8766a70e7)

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]
97.21: This question;,.quhn( fj iys/y3f v refers to the motion of a toy car traveling along the x-a2o9mmnp w,e7cr l28 idxis. The graph shown 2irne l8, d2 mc7wpm9obelow is a plot of the car’s velocity in the x direction, $v_x$ versus time $t$.What was the acceleration at 33 s?

A. $+\;0.40\;m/s^2$
B. $+\;0.20\;m/s^2$
C. 0
D. $-\;0.20\;m/s^2$
E. $+\;0.40\;m/s^2$


参考答案:  B


本题详细解析: 暂无

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