# BatchVelocity(PhysicsBody)

> Create a default batch velocity, assigning the PhysicsBody.

## Definition

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

```csharp
public BatchVelocity(PhysicsBody physicsBody)
```

### Parameters

**** (\[PhysicsBody]\(/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsbody)): The [PhysicsBody](/engine/6000.3/script-reference/unityengine/lowlevelphysics2d/physicsbody.md) to write to.