本题目来源于试卷: Physics Unit7: Linear Momentum,类别为 通用国际物理
[单选题]
A 1500-kg car traveling at 90.0 cc4g(:xtz k a;rzl1,m) 4 p0n/qtmis4zb3hs dkm/h east co 2z/0 n 6wnrf3 9ajk 4bfggean-llides with a 3000-kg car traveling at 60.0 km/h south. The two cars stick together after the collision. (See Fig. 7-1. gkwbf9/z4a3g6 arne -f0 jn2n) What is the speed of the cars after collision? 
A. 8.33 m/s
B. 13.9 m/s
C. 17.4 m/s
D. 21.7 m/s
参考答案: B
本题详细解析:
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