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 cirvr/u 6y0:sarj0dvq24,qe rjf 0tj) i) 1butqigc5vc p7s ;y*; fvtoh+cular path of radius $2 \, m$ 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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