Bullet Rigid Body Types

You can specify the rigid body type by setting Body Type in the Create Rigid Body Option window or in the Rigid Body Properties section of the bulletRigidBodyShape node Attribute Editor. In Bullet, Dynamic rigid bodies are often referred to as active rigid bodies while Kinematic and Static rigid bodies are also known as passive rigid bodies.

There are three types of Bullet rigid bodies:

You can animate the rigid body type and its transformation. When the Body Type attribute is set to Kinematic Rigid Body, you can set keys for the rigid body's Transform attributes. Keyed transformations have no effect when Body Type is set to Dynamic Rigid Body. Dynamic rigid body transformations are determined by the solver. See Rigid Body Properties for more information about Rigid Body settings.