本题目来源于试卷: Physics Unit7: Linear Momentum，类别为 通用国际物理
[单选题]
A 70-kg astronaut is space-walking odfd .zwjho0j r;g:d txw,j(;6utside the space capsulfk c5xp,;v-x-vt xv/uz8v a3ae and is stationary when the tether line breaks. As a means of returning to the capsule he throws his 5;x vk3va,/ztcpx -f-vv8u ax2.0-kg space hammer at a speed of 14 m/s away from the capsule. At what speed does the astronaut move toward the capsule?
A. 0.40 m/s
B. 1.5 m/s
C. 3.5 m/s
D. 5.0 m/s
参考答案: A
本题详细解析:
暂无
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