Moving a Rigidbody with .addforce is not working

Here is my code
using UnityEngine;
using System.Collections;

public class PlayerController : MonoBehaviour 
	public float speed; 
	public Rigidbody rb;

	void Start () {
		rb = GetComponent<Rigidbody>();

	void Fixedupdate ()
		float moveHorizontal = Input.GetAxis ("Horizontal");
		float moveVertical = Input.GetAxis ("Vertical");

		Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);
		rb.AddForce(movement * speed); 

so this is not giving me any errors but i’m also not getting any control over my object it just sits there. also, is kenimatic and gravity are both unchecked.

any help would be great, this seems like it should work!

If IsKinematic is unchecked in rigidbody that code should work.

Also as people have mentioned in comments you should use:

rb.velocity = movement * speed;

Unless you want to constantly push your player and increase speed to enormous lighting fast with AddForce and that is what you expect.

P.S. Also make sure your speed is not zero.

If everything is fine for your eye then add this line of code at the bottom of your FixedUpdate():

Debug.Log(moveHorizontal + "//" + moveVertical + "//" + speed);

And post result here

P.P.S. Ah lulz just saw it:

you got Fixedupdate but it should be FixedUpdate )))