本题目来源于试卷: Physics Unit2: Kinematics One Dimensional Motion，类别为 国际高中通用物理
[单选题]
Human reaction time is usua0mx9q.uwk -c4s)d eiully greater than 0.10 s. If your frienyx yp/). zf/fw8y dpx8d holds a ruler between your fingers and releases it without warning, how far can you expect the ruler to fay/ ).fwd/y8z xy x8ppfll before you catch it?
A. at least 3.0 cm
B. at least 4.9 cm
C. at least 6.8 cm
D. at least 9.8 cm
参考答案: B
本题详细解析:
暂无
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