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;v w lv: 5gefyqu) bv6t.1h y)yxl,8gj is trav: (kiv0)x xumgu+.1vu8g 6f1qsaohm eeling in outer space with a velocity of 115m/s To alter its course by 35: +qo.u 0f 1kvugx(ea6h umsvg)xm81i .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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