# Impulse

> The impulse applied to this contact pair to resolve the collision.

## Definition

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

> **Warning:**
>
> **Deprecated.** Please use ContactPairPoint.impulse instead.
>
> **Upgrade to** [ContactPairPoint.impulse](/engine/6000.0/script-reference/unityengine/contactpairpoint/impulse-1.md)

```csharp
public Vector3 Impulse { get; }
```

### Remarks

To work out the force applied you can divide the impulse by the last frame's simulation time step.