# multiplyColliderForceByParticleSpeed

> Specifies whether the physics system considers particle speeds when it applies forces to Colliders.

## Definition

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

```csharp
public bool multiplyColliderForceByParticleSpeed { get; set; }
```

### Remarks

Additional Resources: [ParticleSystem.CollisionModule.colliderForce](/engine/6000.0/script-reference/unityengine/particlesystem/collisionmodule/colliderforce.md), [ParticleSystem.collision](/engine/6000.0/script-reference/unityengine/particlesystem/collision.md).