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 i *65oicig h w+vs traveling down the road zjvrf;1ni nfg8v5)m) :*xwl crrjlx(,g7 0v i. The mass of the trailer is 4 times the mass of the tractor. If the tractor accelerates forward, the force that the trailer appli ( rrnf)wvr)vjn: cgi 7lx;,mlf1i x g5z0v8j*es 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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