本题目来源于试卷: Physics Unit5: Circular Motion & Gravitation，类别为 国际高中通用物理
[单选题]
A car goes around a curv dj(:*rwh4o;fzlk0 5 d4tayalqm17fie xqy8 ;/w+wbfg 6q8 ulaof radius r at a constant speed v. Then it goes around the same curve at half of the original speed. What is the centripetal force on the car as it goes around the curve for the second time, compared gaq;yq 6wux fb8/l+w8to the first time?
A. twice as big
B. four times as big
C. half as big
D. one-fourth as big
参考答案: D
本题详细解析:
暂无
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