Physics Unit8: Rotational Motion (id: 3e6fadf87)

[单选题]
A hoop of radius 0.50 m auo1 sdb56zb6nndn4 bb/2r+ hcvn a mass of 0.20 kg is released from rest and allowed to roll down an inclined plane. How 2hb+cn / b4nvrfast is it moving after dropping a vertical distance of 3.0 m?

A. 2.2 m/s
B. 3.8 m/s
C. 5.4 m/s
D. 7.7 m/s


参考答案:  C


本题详细解析: 暂无