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 cury h0.r-,cunor ve rjb,m +4dj59i ;hvttg of radius r at a constant speed 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 se,+j bth g5mdvir9;tj4cond curve, compared to 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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