Newton’s law of motion (id: 57143f2cf)

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]
05.10: A homeowner pushes a9lg5h j tll*5 ;ibhzlyoxn5y3 2( h)ln lawn mower across a horizo:0r 3l c3,bdf(ko3h0wost1bd8fqn yrntal patch of grass with a constant speed by applying a force P. The arrows in the diagram correctly indicate the d: 0rhk(lfd1q0sfrdwcy383tbob , 3 on irections but not necessarily the magnitudes of the various forces on the lawn mower. Which of the following relations among the various force magnitudes, W, f, N, P is CORRECT?

A. $P > fand N > W$
B. $P < fand N =W $
C. $ P > fand N < W $
D. $P = fand N > W $
E. none of the above


参考答案:  A


本题详细解析: 暂无

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