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动能和势能

> 姚明是我国著名的篮球运动员，现效力于NBA火箭队，如图所示为他投篮时篮球运动轨迹的示意图，以下关于篮球的机械能的说法（不计空气阻力）正确的是 A.从a到b这个过程，机械能增大 B.从a到b这个过程，动能转化为重力势能 C.从b到c这个过程，机械能减小 D.在b点时，动能最大，势能最小

问题：

发布时间：2024-09-12

姚明是我国著名的篮球运动员，现效力于NBA火箭队，如图所示为他投篮时篮球运动轨迹的示意图，以下关于篮球的机械能的说法（不计空气阻力）正确的是

A.从a到b这个过程，机械能增大
B.从a到b这个过程，动能转化为重力势能
C.从b到c这个过程，机械能减小
D.在b点时，动能最大，势能最小

参考答案：

提问用户：w7***PoI

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