本题目来源于试卷: Physics Bowl by Topic 3: Kinematics - part II Uniformly Accelerated Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
14.17: A toy car initiao-kbvb((he3 s0bo7 q kr hzn30lly moves to the right at 60anv: rh4o 1n:m.0 cm/s. Five seconds later, the car is moving at 40.0 cm/s to:4r: hvon na1m the left. The total displacement of the car during this time is 10.0 cm to the left of where it started. Which one of the following choices best represents the magnitude of the average acceleration of the car during the five second motion?
A. $20.0\;cm/s^2$
B. $4.00\;cm/s^2$
C. $2.00\;cm/s^2$
D. $0.80\;cm/s^2$
E. $0.40\;cm/s^2$
参考答案: A
本题详细解析:
暂无
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