本题目来源于试卷: Physics Unit7: Linear Momentum，类别为 通用国际物理
[单选题]
Two astronauts, of masses 60 kg and 80 kg, are i 2hc2t:v-7qcu5lktuy nitiall)gvyvm9z/km kuk 5f1w4 c5y m;2a wp+ty at rest in outer space. They push each other apart. What is their separvm4kpz w 5; ku12w fyay5gcmv+m k9/t)ation after the lighter astronaut has moved 12 m?
A. $15 \; m$
B. $18 \; m$
C. $21 \; m$
D. $24 \; m$
参考答案: C
本题详细解析:
暂无
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