Newton’s law of motion (id: c2890d7e6)

本题目来源于试卷: Newton’s law of motion，类别为 美国物理杯赛(Physics Bowl)

[单选题]
98.03: An object in equilibrium hkmdyc1p7b -r8as three forces, F1 of 30 N, F2 of 5z a- yk8v6s,w61ojwouhq( bf: 0 N, and F3 of 70 N, acting on it. The magnitude of the resultant ofF1 and F2 :uw61 y fqkzhw8s ovj6b(a-,ois

A. 10 N
B. 20 N
C. 40 N
D. 70 N
E. 80 N


参考答案:  D


本题详细解析: 暂无

微信扫一扫，分享更方便