# tangentSpeed

> The tangent (surface) speed. This is assigned to the current PhysicsShape.surfaceMaterial.

## Definition

* **Type:** Property
* **Namespace:** [UnityEngine.LowLevelPhysics2D](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d.md)
* **Assembly:** UnityEngine.Physics2DModule

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