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 magnitudz:hoy9t5c+b re 8.0 m at an angleob - . 7pvfc.3,sasn,qzo-cql of 30 degrees below the +x axis. The y component obp.c.-, csa ,n3- sv7 qqlozoff 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