本题目来源于试卷: Physics Unit6: Work and Energy，类别为 通用国际物理
[单选题]
A spring-driven dart gun pri;rt 55r3mkzl98 rux3 id. hsaopels a 1016mdzk .y3agj;8s pe5-vnj/c2 obkoj-g dart. It is cocked by exerting a force of 20 N over a distance of 5.0 cm. With what speed will the dart leave the gun, assuminak-j6;nc mg 8ve1odz2 ob5 k3/ sj.pjyg the spring has negligible mass?
A. 10 m/s
B. 14 m/s
C. 17 m/s
D. 20 m/s
参考答案: B
本题详细解析:
暂无
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