# bounciness

> The effective bounciness used for the ContactPoint2D.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine](/engine/6000.7/script-reference/unityengine.md)
* **Assembly:** UnityEngine.Physics2DModule

```csharp
public float bounciness { get; }
```

### Remarks

When two [Collider2D](/engine/6000.7/script-reference/unityengine/collider2d.md) come into contact, both their [\_bounciness](/engine/6000.7/script-reference/unityengine/collider2d/bounciness.md) values are combined.

This property provides the result of that combination and is used by the physics solver when calculating a collision response.

Additional Resources: [\_bounciness](/engine/6000.7/script-reference/unityengine/physicsmaterial2d/bounciness.md), [\_friction](/engine/6000.7/script-reference/unityengine/contactpoint2d/friction.md)