For an overview on creating, visualizing, and simulating mover constraints, including AnimationConstraint, see mover constraints. Also see Roblox units to understand how Roblox units compare to metric units.
An AnimationConstraint constrains its Attachments by an offset transform. It can be either kinematic for snap‑to behavior or it can follow the target trajectory using force and torque. limited by MaxForce and MaxTorque.
Transform
The constraint's Transform is the internal CFrame that's manipulated when the constraint is being animated. How this transform is reached depends on the constraint's kinematic setting.
Kinematic
When the constraint's IsKinematic property is true, the connected parts snap to the transform instantly and precisely without participating in physics simulation. When false, the connected parts follow the trajectory using force and torque.
Force and torque
If the constraint is not set to kinematic, the connected parts follow a trajectory toward the transform using a maximum force/torque limited by MaxForce and MaxTorque respectively.