Physics Unit5: Circular Motion & Gravitation (id: 1f09802c4)

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 frictionless curve of l-fi a;yx xny s00u6y7w g(48ekm3jz oradiusz98yj,)h(b t*w8gmg j ljxp4l 100 m, banked at an angle of $45^{\circ}$, may be safely negotiated at a speed of

A. 22 m/s.
B. 31 m/s.
C. 44 m/s.
D. 67 m/s.


参考答案:  B


本题详细解析: 暂无

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