本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 通用国际物理
[单选题]
During the investigation of a traffic a7 z4 d,igawdnbc0x/7j;p 1mqlccident, polic *v 1anedxv(43h:w,fis7 j4q2 pwxe fae find skid marks 90.0 m long. They determine the coefficient of friction between the car's tires and the roadway to be 0.500 for the preea vwefd 4,n :3x(2vhqw 1x*ia7fjp 4svailing conditions. Estimate the speed of the car when the brakes were applied.
A. 9.49 m/s
B. 21.0 m/s
C. 29.7 m/s
D. 42.0 m/s
参考答案: C
本题详细解析:
暂无
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