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 upward with a speed v. A,;v/sdj :k lmg)h-ualn identical secondh i4w6 zsk6qovl;,ybwmf l;+ 2 12klvz ball is thrown upward with a speed 2v (twice as fast). What is the rats+yl; f vl6q 126owbzzlm,ikk; w4 v2hio 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
| 
