Rigidbody.addforce not working with prefab

So I have a prefab called asteroid, which has a script attached named AsteroidInit.cs that initializes various aspects of the asteroid. I also have another script called GameInfo, which I am using to store various important game variables. My script structure is as follows:

 [RequireComponent(typeof(Rigidbody2D))]
 
 public class AsteroidInit : MonoBehaviour {    
 
 //objects and components to reference
     private GameObject go;
     private Transform trans;
     private GameInfo GI;
     private Rigidbody2D rb;
  //The indicidual asteroid variables
     private int rotoSpeed;
     private int moveSpeed;
     private int astroHealth;
     private int value;
     private int children;
     private int typeNum;
 
 //Function to set the various values for the astroid references GameInfo script.
 
 private void SetAsteroidValues( GameObject asteroidObj, GameInfo GI)
 {
    //This section would be too long to be worth posting here.
    //The values are being set properly anyway, I have checked.
 }
 
     void Awake()
 {
     //Get references
     go = this.gameObject;
     trans = go.transform;
     GI = FindObjectOfType<GameInfo>();
     rb = go.GetComponent<Rigidbody2D>();

     //set values
     SetAstroidValues(go, GI);
 }

 void Start()
 {
     //set initial velocity
     rb.AddRelativeForce(new Vector3(0, moveSpeed, 0));//This doesn't work
     //set rotation
     trans.rotation = Random.rotation;//This doesn't work
 }
    void Update()
     {
         //rotate each frame
         trans.eulerAngles = new Vector2( 0, (trans.eulerAngles.z + rotoSpeed) * Time.deltaTime);//This also doesn't work
     }

This script is attached to an Astroid prefab with an attached Rigidbody. The Astroid prefab is Intantiated by another script called GameManager at origin.

Why are only certain portions of the script executing on the prefabs? I have used Debug.Log to check and see if the values stored in the GameInfo script were the problem, but they seem to be being set correctly. Additionally, after placing some Debug.Log calls in Start() and Update(), both seem to be executing. So whats up?