Physics Bowl by Topic 2: Kinematics - part I General Motion (id: 0c77ed341)

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]
03.11: The accompanyiw qn,nkf:w .alr6p j*v 52s*zxng graarzna+ef8(dh cg( +*t ph describes the motion of a marble on a table top for 10 seconds. For which time interval(s) did the marble have a neggncehf++(r za *a(d8t ative velocity?

A. from t = 8.0 s to t = 10.0 s only
B. from t = 6.9 s to t = 10.0 s only
C. from t = 4.8 s to t = 10.0 s only
D. from t = 4.8 s to t = 6.2 s and from t = 6.9 s to t = 10.0 s only
E. from t = 3.2 s to t = 3.6 s, from t = 4.8 s to t = 5 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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