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how to set rigidbody velocity in unity

//Set Velocity to a certain speed
[SerializeField] private float maxSpeed = 10;
[SerializeField] private Rigidbody rb;

void FixedUpdate() {
  if(rb.velocity.magnitude > maxSpeed) {
    rb.velocity = rb.velocity.normalized * maxSpeed;
  }
}

unity how to set rigidbody velocity

Vector3 velocity = new Vector3(10f/*x*/, 10f/*y*/, 10f/*z*/);
GetComponent<Rigidbody>().velocity = velocity;

rigidbody velocity c# unity

//for rigidbody2D
GetComponent<Rigidbody2D>().velocity =new Vector2(40,0);

how to decrease velocity of a Unity rigidbody

//Drecrese Rigidbody Speed
[SerializeField] private Rigidbody rb;

void FixedUpdate() {
  //Decrease speed
  rb.velocity -= rb.velocity * 0.1f;
}

rigidbody.velocity.magnitude

//speed of rigidbody in m/s
float speed = rigidbody.velocity.magnitude;

unity control velocity on rigidbody

[SerializeField] private Rigidbody rb;
[SerializeField] private float rbMaxSpeed;
[SerializeField] private float rbMag;

private void FixedUpdate()
{
	rbMag = rb.velocity.magnitude; // Total xyz magnitude
    if (rb.velocity.magnitude > rbMaxSpeed)
    {
    	rb.velocity = Vector3.ClampMagnitude((Vector3)rb.velocity,rbMaxSpeed);
    }
}

rigidbody velocity

rb.velocity = new Vector3(0, 10, 0);