本题目来源于试卷: Space Time & Motion A.2 Forces & Momentum，类别为 IB物理学
[单选题]
An object moves in a circulard; j,vfeyk*w zx8z3y0tnhyru2 v v r;id,):-a path of rrd/9b pi2 ej*madius $2 \, m$ with angular displacement of $\frac {π} {2}$ rad in $5 \, s$
What is the linear speed of the object?
A. $\frac{π}{20} \, m \, s^{-1}$
B. $\frac{π}{10} \, m \, s^{-1}$
C. $\frac{π}{5} \, m \, s^{-1}$
D. $\frac{π}{5} \, m \, s^{-1}$
参考答案: C
本题详细解析:
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