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]
A ball is thrown vertically upward with a speed v. Anqga: l+ifw n.0 7pn9cr identical suky:p 9vl6hmo r:fzzdlys(y. .b r.. )econd ball is thrown upward with a speed 2v (twice as fast). What is the ratio of the maximum height of the second ball to that of the fid.uyb kl.:m.9rs zryv6f.hz l(:o)p yrst ball? (How many times higher does the second ball go than the first ball?)
A. 4:1
B. 2:1
C. 1.7:1
D. 1.4:1
参考答案: A
本题详细解析:
暂无
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