本题目来源于试卷: Newton’s law of motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
07.21: A box slides to the roj s)+ne .7a-t i(mteyight dwa4/4 fyl6g hzwe-;bs+m ip 9across a horizontal floor. A person called Ted exerts a force T to thedibw/zpye - s4l +94wh;6f agm right on the box. A person called Mario exerts a force M to the left, which is half as large as the force T. Given that there is friction f and the box accelerates to the right, rank the sizes of these three forces exerted on the box.
A. $f < M < T$
B. $ M < f < T$
C. $ f < T < M$
D. $ T < M < f$
E. It cannot be determined.
参考答案: A
本题详细解析:
暂无
| 
