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]
10.11: Consider the motion of an ob o:ss+57 ly vrlject given by the velocity vs. time graph s cxkl 6o7rr u ob 4oeh,-m6ywwl1pg778hown. For which tim mxh 6o o-67p74 7wul8eclg1bwr,ork ye(s) is the acceleration of the object equal to 0?

A. Only at t=2.0s
B. Only at t=5.0s
C. Only at t=8.0s
D. At t=2.0s and 5.0s
E. At t=2.0s, 5.0s and 8.0s
参考答案: B
本题详细解析:
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