Physics Bowl by Topic 2: Kinematics - part I General Motion (id: 3646e8f85)

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]
03.12: The accompanying graph describekfdmlz hu+xw4 .cv-r1 n)r71 as the motiomu 7a sv61)ln 81xeyjln of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a posi 1 yv1man6s 8luxle)j7tive acceleration?

A. from t = 0.0 s to t = 8.0 s only
B. from t = 0.0 s to t = 3.6 only
C. from t = 3.8 s to t = 4.8 s and t = 6.2 s to t = 6.8 s only
D. from t = 2.0 s to t = 2.5 s, from t = 5.8 s to t = 6.2 s, and from t = 8.4 s to t = 8.8 s only
E. from t = 3.3 s to t = 3.7 s, from t = 4.8 s to t = 5.0 s, and from t = 6.8 s to t = 7.2 s only


参考答案:  D


本题详细解析: 暂无

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