Physics Unit3: Kiematics Motion in Two Dimension & Vectors (id: d4f61075f)

本题目来源于试卷: Physics Unit3: Kiematics Motion in Two Dimension & Vectors，类别为 通用国际物理

[单选题]
Vector A has magnitunxz(/ cdmyl(w5r4y*lbmhz 6 ;de 8.0 m at an anglesxc ,)pkv4 y;j,bti z: of 30 degrees below the +x axis. The y component o bpc)s j; x:,vizty,k4f A is

A. 6.9 m.
B. -6.9 m.
C. 4.0 m.
D. -4.0 m.


参考答案:  D


本题详细解析: 暂无

微信扫一扫，分享更方便