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向心力与向心加速度

> 关于向心力的说法，正确的是（） A．物体受到向心力的作用才可能做圆周运动 B．向心力是指向圆心的合力，是根据力的作用效果来命名的 C．向心力既改变物体运动的方向，也改变物体运动的快慢 D．向心力可以是重力、弹力、摩擦力等各种力的合力，也可以是其中某一种力或某一种力的分力

问题：

发布时间：2024-09-12

关于向心力的说法，正确的是（）

A．物体受到向心力的作用才可能做圆周运动

B．向心力是指向圆心的合力，是根据力的作用效果来命名的

C．向心力既改变物体运动的方向，也改变物体运动的快慢

D．向心力可以是重力、弹力、摩擦力等各种力的合力，也可以是其中某一种力或某一种力的分力

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