Can someone help me with the movement of the ufo from the ufo tutorial

Questions & Answers
1

I did the script and I added to the ufo but It doesn´t move,here is the script:
using System.Collections;
using UnityEngine;

public class playercontrol : MonoBehaviour {

public float Speed; 

private Rigidbody2D rb2d;

void Start()
{
	rb2d = GetComponent<Rigidbody2D> () ;
}

void fixedupdate()
{
	float movehorizontal = Input.GetAxis ("Horizontal");

	float movevertical = Input.GetAxis ("Vertical");

	Vector2 movement = new Vector2 (movehorizontal,movevertical);

	rb2d.AddForce (movement*Speed);
}

there is something wrong?

2

Use FixedUpdate Instead of fixedupdate()