---
title: elasticity
framework: uikit
role: symbol
role_heading: Instance Property
path: uikit/uidynamicitembehavior/elasticity
---

# elasticity

The amount of elasticity applied to collisions for the behavior’s dynamic items.

## Declaration

```swift
var elasticity: CGFloat { get set }
```

## Discussion

Discussion Default value is 0.0. Valid range is from 0.0 for no bounce upon collision, to 1.0 for completely elastic collisions.

## See Also

### Configuring a dynamic item behavior

- [addAngularVelocity(_:for:)](uikit/uidynamicitembehavior/addangularvelocity(_:for:).md)
- [addLinearVelocity(_:for:)](uikit/uidynamicitembehavior/addlinearvelocity(_:for:).md)
- [allowsRotation](uikit/uidynamicitembehavior/allowsrotation.md)
- [angularResistance](uikit/uidynamicitembehavior/angularresistance.md)
- [angularVelocity(for:)](uikit/uidynamicitembehavior/angularvelocity(for:).md)
- [linearVelocity(for:)](uikit/uidynamicitembehavior/linearvelocity(for:).md)
- [density](uikit/uidynamicitembehavior/density.md)
- [friction](uikit/uidynamicitembehavior/friction.md)
- [resistance](uikit/uidynamicitembehavior/resistance.md)
- [charge](uikit/uidynamicitembehavior/charge.md)
- [isAnchored](uikit/uidynamicitembehavior/isanchored.md)