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 r0;(w g 0mdrdv1 us,a.-fn tgnr yau*-jvp ax/.87ulvxight across a horizontal floor. A person called Ted ej78.va/-vyxulau * pxxerts a force T to the 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
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