# friction

> The Coulomb (dry) friction coefficient, usually in the range [0, 1].

## Definition

* **Type:** Property
* **Namespace:** [Unity.U2D.Physics](/engine/6000.7/script-reference/unity/u2d/physics.md)
* **Assembly:** UnityEngine.PhysicsCore2DModule

```csharp
public float friction { readonly get; set; }
```