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name: BodyVelocity
type: class
memory_category: Instances
summary: |
  Applies a force to maintain a constant velocity.
description: |
  The `BodyVelocity` object applies a force on an assembly such that it will
  maintain a constant velocity. The `Class.BodyVelocity.Velocity|Velocity`
  property, not to be confused with `Class.BasePart.AssemblyLinearVelocity`,
  controls the goal velocity.

  `Class.BodyVelocity` is the linear counterpart to `Class.BodyAngularVelocity`.
  If you need the assembly to move toward a goal position, use
  `Class.BodyPosition` instead. If you need further control on a force applied
  to an object, consider using a `Class.BodyForce` or `Class.BodyThrust`
  instead.

  The strength of the force applied by this object is controlled by several
  factors, namely the difference between the assembly's current velocity and the
  goal velocity. This is multiplied by `Class.BodyVelocity.P|P` (power) to
  either amplify or diminish it. The resulting force is then capped by
  `Class.BodyVelocity.MaxForce|MaxForce`.
code_samples: []
inherits:
  - BodyMover
descendants: []
tags:
  - Deprecated
deprecation_message: |
  This object is deprecated and should not be used for new work. Use
  `Class.LinearVelocity` instead, and see the
  [legacy conversion notes](../../../physics/mover-constraints.md#legacy-mover-conversion).
properties:
  - name: BodyVelocity.MaxForce
    summary: |
      Determines the limit on how much force that may be applied to each axis.
    description: |
      This property determines the limit on the amount of force that may be
      applied on each axis in reaching the goal
      `Class.BodyVelocity.Velocity|Velocity`. If an assembly isn't moving,
      consider increasing this value and also check that it is not
      `Class.BasePart.Anchored|Anchored` or attached to any anchored assemblies.
    code_samples: []
    type: Vector3
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Goals
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: BodyVelocity.maxForce
    summary: ''
    description: ''
    code_samples: []
    type: Vector3
    tags:
      - NotReplicated
      - Deprecated
    deprecation_message: |
      This property is a deprecated variant of `Class.BodyVelocity.MaxForce`
      which should be used instead.
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Goals
    serialization:
      can_load: true
      can_save: false
    capabilities:
      - Physics
  - name: BodyVelocity.P
    summary: |
      Determines how aggressive of a force is applied in reaching the goal
      velocity.
    description: |
      This property determines how much power is used while applying force in
      order to reach the goal `Class.BodyVelocity.Velocity|Velocity`. The higher
      this value, the more power will be used and the faster it will be used.
      The force the `Class.BodyVelocity` exerts increases as the difference
      between the assembly's current velocity and the goal velocity increases.
      This property is multiplied to this force to either amplify or diminish
      it.
    code_samples: []
    type: float
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Goals
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: BodyVelocity.Velocity
    summary: |
      Determines the goal velocity.
    description: |
      This property (not to be confused with `Class.BasePart.Velocity`)
      determines the target velocity towards which force will be exerted. It is
      specified relative to the world, not the assembly.
    code_samples: []
    type: Vector3
    tags: []
    deprecation_message: ''
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Goals
    serialization:
      can_load: true
      can_save: true
    capabilities:
      - Physics
  - name: BodyVelocity.velocity
    summary: ''
    description: ''
    code_samples: []
    type: Vector3
    tags:
      - NotReplicated
      - Deprecated
    deprecation_message: |
      This property is a deprecated variant of `Class.BodyVelocity.Velocity`
      which should be used instead.
    security:
      read: None
      write: None
    thread_safety: ReadSafe
    category: Goals
    serialization:
      can_load: true
      can_save: false
    capabilities:
      - Physics
methods:
  - name: BodyVelocity:GetLastForce
    summary: |
      Not implemented and will always return the `0` vector.
    description: |
      This method is not implemented and it will always return the `0` vector.
      You are advised to use `Class.AlignPosition` instead.
    code_samples: []
    parameters: []
    returns:
      - type: Vector3
        summary: ''
    tags: []
    deprecation_message: ''
    security: None
    thread_safety: Unsafe
    capabilities:
      - Physics
  - name: BodyVelocity:lastForce
    summary: |
      Returns the last force in the object.
    description: |
      Returns the last force in the object.
    code_samples: []
    parameters: []
    returns:
      - type: Vector3
        summary: ''
    tags: []
    deprecation_message: ''
    security: None
    thread_safety: Unsafe
    capabilities:
      - Physics
events: []
callbacks: []