問題詳情

57.tAn object travelling at constant speed vina circle of radius R has an acceleration a. If both R and v are doubled, the acceleration will change to
(A) a
(B) 2a
(C)4at
(D) 8a
(E) a/2

參考答案

答案：B

統計：A:0,B:1,C:0,D:0,E:0

難度：計算中