本题目来源于试卷: Physics Unit7: Linear Momentum，类别为 国际高中通用物理
[单选题]
A fire hose is turned on the door of a burning building in order to knock the /2 z6g9 )f :ntefo:gzkzvtvc7 do2k ct) fzn:z9e:o7gt /vgfz6v lk,* .avdis9x or down. This requires a force of 1000 N. If the hose delivers 40 kg per second, what is the minimum velocity of the stream needed, ass*k vas.dix l9,uming the water doesn't bounce back?
A. 15 m/s
B. 20 m/s
C. 25 m/s
D. 30 m/s
参考答案: C
本题详细解析:
暂无
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