Physics Unit9: Static Equilibrium, Elasticity and Fracture (id: cef5838d1)

本题目来源于试卷: Physics Unit9: Static Equilibrium, Elasticity and Fracture，类别为 通用国际物理

[单选题]
A book weighs 6 N. When held lz9hq sb:7 qkf01z7ae.q2o w qat rest abovnsc z4 b 1:i2fy+am2kve your head the net force on the book 2ci:f mzyb 1v24+sn kais

A. 0 N.
B. 6 N.
C. 9.8 N.
D. -6 N.


参考答案:  A


本题详细解析: 暂无

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