一个物理题,英语强的进来A cannon fires as soon as airplane is vertically above it.Given that the airplane is traveling horizontally at speed U and the speed of the cannon ball isV=2Uwhat is the range of vertical distance of the airplane abo

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一个物理题,英语强的进来A cannon fires as soon as airplane is vertically above it.Given that the airplane is traveling horizontally at speed U and the speed of the cannon ball isV=2Uwhat is the range of vertical distance of the airplane abo
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一个物理题,英语强的进来A cannon fires as soon as airplane is vertically above it.Given that the airplane is traveling horizontally at speed U and the speed of the cannon ball isV=2Uwhat is the range of vertical distance of the airplane abo
一个物理题,英语强的进来
A cannon fires as soon as airplane is vertically above it.Given that the airplane is traveling horizontally at speed U and the speed of the cannon ball isV=2U
what is the range of vertical distance of the airplane above the cannon for the cannon ball to hit the airplane?Neglect air resistance and express your answer in terms of U and g.

一个物理题,英语强的进来A cannon fires as soon as airplane is vertically above it.Given that the airplane is traveling horizontally at speed U and the speed of the cannon ball isV=2Uwhat is the range of vertical distance of the airplane abo
0≤h≤√3u/2g
当炮弹的水平分速度小于u时不能追上飞机,因此炮弹的水平分速度最小为u,此时垂直分速度最大,为√3u,h最大为√3u/2g

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