# contactDamping

> The contact bounciness with 1 being critical damping (non-dimensional).

## Definition

* **Type:** Property
* **Namespace:** [Unity.U2D.Physics](/engine/6000.5/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public float contactDamping { get; set; }
```