本题目来源于试卷: Physics Unit3: Kiematics Motion in Two Dimension & Vectors，类别为 国际高中通用物理
[单选题]
A fighter plane moving 200 m/s horizontally fo5qe x/ *2 8doig*iafn)mx+nxires a projectileran-q9xj)2eqf:k yurjn7amf4kh8 6 h 9 +wb)n with speed 50.0 m/s ijan96k q jme +x:uqwry)42k 8 7)bh9nhffan-rn a forward direction $30.0^{\circ}$ below the horizontal. What is the speed of the projectile with respect to a stationary observer on the ground?
A. 245 m/s
B. 250 m/s
C. 268 m/s
D. 293 m/s
参考答案: A
本题详细解析:
暂无
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