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]
06.07: A car has the velocity versus time * csn80t2i*5 q8zp skda ltvz,curve shown. Which of the follo tavk;xg)rgf;* *2d 5;pj apmxwing statements regarding its m *gg*fx2 jtr; ; )ampxkd5ap;v otion is NOT CORRECT?
A. The car is moving fastest at 2.0 s.
B. The car is at rest at approximately 5.2 s.
C. The car is speeding up from t = 0 to t = 2.0 s.
D. The car has negative acceleration at t = 4.5 s.
E. The car has no acceleration at the instant t = 2 s.
参考答案: D
本题详细解析:
暂无
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