Physics Unit4: Force Dynamics & Newton's Laws (id: 48ce32e8e)

本题目来源于试卷: Physics Unit4: Force Dynamics & Newton's Laws，类别为 通用国际物理

[单选题]
A wooden block slides directly down an inclined plane, at a utzl7whf wap 5(o78dhi5c547oi w qt7 3nhf* ulg3*7q)c+wsbd h krq4constant velocity of dqhn *rg sw)u7*c3+ h43kbqf l6.0 m/s.
What is the coefficient of kinetic friction, if the plane makes an angle of $25^{\circ}$ with the horizontal?

A. 0.47
B. 0.42
C. 0.37
D. 0.91


参考答案:  A


本题详细解析: 暂无

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