Physics Bowl by Topic 2: Kinematics - part I General Motion (id: 65193e048)

本题目来源于试卷: Physics Bowl by Topic 2: Kinematics - part I General Motion，类别为 美国物理杯赛(Physics Bowl)

[单选题]
16.06: An object, thrown straight downward with g*)zwh613 cji9x d jjxa spe,+e:rwnc -qssed of $20.0\;m/s$, takes $2.00\;s$ to reach the ground below. From what height above the ground was the object thrown? Ignore air resistance.

A. 20.0 m
B. 40.0 m
C. 50.0 m
D. 60.0 m
E. 80.0 m


参考答案:  D


本题详细解析: 暂无

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