本题目来源于试卷: Physics Unit2: Kinematics One Dimensional Motion，类别为 通用国际物理
[单选题]
A ball is thrown vertically upward4r t;,gr(rauf with a speed v. An identical second bal.pw f 5q*qsj/gfq,kvzjy 7 xapf) y1t)apn44 +l is thrown upward with a speed 2v (twice agk,j y)1 *qzsv5p p.aj)fyqwatn 4f pf+q4x/7s fast). What is the ratio of the maximum height of the second ball to that of the first 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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