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]
02.02: The graph represents :ytsn4 v)zq45 m +nizi t zbo) bujv (2pdfj(2-fb+jse)he relationship between distance and time for an object that is moving 2o uf) j) j-+v(bpdj2b ezbf(s along a straight line. Between what times did the object have a non-zero acceleration?

A. 0 s only
B. 0 s to 5 s
C. 5 s to 8 s
D. 0 s to 8 s
E. the object was not accelerating at any time
参考答案: C
本题详细解析:
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