本题目来源于试卷: Physics Unit5: Circular Motion & Gravitation，类别为 通用国际物理
[单选题]
A car goes around a curve of radius r at a constant speedtgut68-k zmg5 /,.rfg:tnz z i,0 ;*d 6eason+vwqlr q v. Then it goes around a curve of radius 2r at speed 2v. What is the centripetal force on the car as it goes around the second curve, compared to+ v, ;qs0aq *eron6lwd the first?
A. four times as big
B. twice as big
C. one-half as big
D. one-fourth as big
参考答案: B
本题详细解析:
暂无
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