gc textbook chapter 7 Linear Momentum (id: 38f8faf95)

本题目来源于试卷: gc textbook chapter 7 Linear Momentum，类别为 通用国际物理

[填空题]
A rocket of total mass 3180 kg imn; 2und7f:xa s traveling in crkq1af9 l3z(y4k(f+ tfip ,houter space with a velocity of 115m/s To altfl tihfrac k,1(f 3pk49y q(z+er its course by 35.0 $^{\circ} $, its rockets can be fired briefly in a direction perpendicular to its original motion. If the rocket gases are expelled at a speed of 1750m/s how much mass must be expelled?    kg

参考答案: 140±2%


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