本题目来源于试卷: newnewnewnew，类别为 IB物理学
[问答题]
A person exerts an upward force of 40 N to hold a bag of grl v-022ol7z)d v(bha/ t ss-x(xsv eruoceries. Descr)2tk,w oyr , kpap06naibe the “reaction” force (Newton’s third law) by stating (a) its magnitude, (b) its direction, (c) on what o,tp o0ya2kw n6)rka,p bject it is exerted, and (d) by what object it is exerted.
参考答案: (a) The magnitude is 40 N. (b) The direction is downward. (c) It is exerted on the person. (d) It is exerted by the bag of groceries.
本题详细解析:
暂无
| 
