牛顿动力学插件 Motion Boutique Newton 2.0.73 CS5-CC Win/MacMotion Boutique Newton可以在AE中模拟动力学，物体间的碰撞之类的，重力，摩擦都可以很容易模拟出来。

Newton interprets 2D composition layers as rigid bodies interacting in a real environment.

Newton provides many simulation controllers such as body properties (type, density, friction, bounciness, velocity, etc), global properties (gravity, solver), and allows the creation of joints between bodies.

Once simulation is completed, animation is recreated in After Effects with standard keyframes.

安装方法：下载解压后将newton这个文件夹放到Plug-ins里面（Mac虽然写着Newton_trial，但都已经是破解版了），然后在AE合成composition窗口中使用（不再特效列表里面）

官网：http://motionboutique.com/