某物体以30m/s的初速度竖直上抛，不计空气阻力，g取10m/s2．5s内物体的_刷题宝

题干

某物体以30m/s的初速度竖直上抛，不计空气阻力，g取10m/s²．5s内物体的（）

A：路程为25m

B：位移大小为25m，方向向下

C：速度改变量的大小为10m/s

D：平均速度大小为5m/s，方向向上

上一题下一题 0.0难度选择题更新时间:2018-09-03 02:11:34

答案(点此获取答案解析）

D

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