A.6.67m/s,2.27m B.v=7.67m/s,3.19m C.v=

题库2022-08-02  66

问题 A.6.67m/s,2.27mB.v=7.67m/s,3.19mC.v=8.67m/s,3.54mD.v=7.67m/s,2.59m

选项 A.6.67m/s,2.27m
B.v=7.67m/s,3.19m
C.v=8.67m/s,3.54m
D.v=7.67m/s,2.59m

答案 A

解析
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