Newton’s law of motion (id: 9abe2096a)

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]
99.05: A tractor-trailer truck qm1*cj)n mwj c+gdq3 360byqo is travelingsq ,npj+oq1vodcx) kr9 7i8d fa:m3t6 down the road. The mass of the trailer is 4 times thn 9 af,3t 8vd+mopo) krid6cs:1q7jq xe mass of the tractor. If the tractor accelerates forward, the force that the trailer applies on the tractor is

A. 4 times greater than the force of the tractor on the trailer.
B. 2 times greater than the force of the tractor on the trailer.
C. equal to the force of the tractor on the trailer.
D. 1/4 the force of the tractor on the trailer.
E. zero since the tractor is pulling the trailer forward.


参考答案:  C


本题详细解析: 暂无

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