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]
An object of mass m sitsix*j t i. l:y;d4pe8ou qh:md +emowqy3c ix7y:g, ()g on a flat table. The Earth pulls on this object with force mg, which we will call the action force. What is the reaction force3mghc: ew,y: )g+xqqyomdi( 7 ?
A. The table pushing up on the object with force mg.
B. The object pushing down on the table with force mg.
C. The table pushing down on the floor with force mg.
D. The object pulling upward on the Earth with force mg.
参考答案: D
本题详细解析:
暂无
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