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 o b.*8kmka s 7(ey p9h7tznvkftz9 8*uyf radius r at a cfrw9;* kd*wql k:zxu.onstant speed v. Then it goes around a curve of radius 2r at speed 2v. k*;kd*zrwq9xu. wl: f What is the centripetal force on the car as it goes around the second 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:
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