# Mean

> Uses a Geomtric Mean algorithm when combining friction or bounciness.

## Definition

* **Type:** Field
* **Namespace:** [UnityEngine](/engine/6000.0/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
Mean = 1
```

### Remarks

Given two friction or bounciness values, the Mean algorithm used is: `SquareRoot(valueA * valueB)`.