Physics Unit4: Force Dynamics & Newton's Laws (id: 30eec89dd)

本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 国际高中通用物理

[单选题]
The coefficient of stati49snquy15yu ne 5 7jgtot4 wy(c and kinetic frictprth i2/ v9ek.ions between a 3.0-kg box and a desk are 0.40 and 0.30, re2rpk/it vh. 9espectively. What is the net force on the box when a 15 N horizontal force is applied to the box?

A. $6.2 \; N$
B. $12 \; N$
C. $8.8 \; N$
D. zero


参考答案:  A


本题详细解析: 暂无

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