title: I deleted "Materials" in Unity and now the scripts added to a sphere don't work
body: <p>I was creating an Unity program, and I deleted the &quot;Materials&quot; folder, because I didn't see anything in it.
  Then, the sphere that I had bugged, so I deleted it and created a new one. I just added the Movement script to the new sphere.
  I tested the program and the sphere didn't move, but the old moved. (I had already deleted the old, but I had the same conditions in the new sphere and the new didn't work).</p>
  <p>There's the Movement Script (sorry if it shows with bad spacing, just copy and paste it, please):</p>
  <pre><code>using System.Collections;
  using System.Collections.Generic;
  using UnityEngine;
  
  public class Movement : MonoBehaviour
  {
      public float force = 150;
      Rigidbody rb;
  
      // Use this for initialization
      void Start()
      {
          rb = GetComponent&lt;Rigidbody&gt;();
      }
  
      // Update is called once per frame
      void Update()
      {
          float h = Input.GetAxis(&quot;Horizontal&quot;);
          float v = Input.GetAxis(&quot;Vertical&quot;);
          Vector3 vector = new Vector3(h, 0.5f, v);
          rb.AddForce(vector * force * Time.deltaTime);
      }
  }
  
      
  </code></pre>