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]
15.09: Two cars are moving to the right on a9sang(bfx ax9 d-61t4 bl2o kw horizontal track, ea v.kr+ +mad4djvgy*9l1 7fv g.qbn1;bxr j/ evch with constant acceleration. jb.mvg;4 dd/1+ rnlvv7qv 1+ xbfgyeja9* rk.At an instant of time, the information about the cars is shown:
Car #1: position = 125.0 m; velocity = 13.0 m/s; constant acceleration = $1.5\;m/s^2$
Car #2: position = 80.0 m; velocity = 9.30 m/s; constant acceleration = $5.5\;m/s^2$
During the next 1.0 second of motion, which one of the following choices best represents what happens to the distance between the cars?
A. It decreases during the entire 1.0 second of motion.
B. It increases during the entire 1.0 second of motion.
C. It initially increases and then decreases resulting in a greater distance between the cars after 1.0 second.
D. It initially increases and then decreases resulting in a smaller distance between the cars after 1.0 second.
E. It initially increases and then decreases resulting in the same distance between the cars after 1.0 second.
参考答案: C
本题详细解析:
暂无
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