本题目来源于试卷: Physics Bowl by Topic 3: Kinematics - part II Uniformly Accelerated Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
17.44: A ball is launiyuu qb7.w;uzz)p-wr c+jd nr 0:+ex7ched vertla0h rxsag;0/a30 9 n uzqy9h9.usyp sically upward. The vertical position of the ball 0.70 3 us09uan s0g9xr9/y;hzpaly0qhs a.s after release is the same as its vertical position 4.10 s after its release. At what time is the object first at a vertical position that is one-half of the maximum height it obtains during its flight?
A. 0.35 s
B. 0.70 s
C. 0.85 s
D. 1.20 s
E. 1.70 s
参考答案: B
本题详细解析:
暂无
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