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,)-u .gtkqzhx a constant speed v. dw.xwjx jpa7cygn*.od34 . ;je5 dg4tThen it goes around a curve of radius 2r at speed 2v. What is the centripetal force on the car as it goes a . ;wtj. 4a3.jgj xxpoe4wd7nd cg*5dyround 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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