keyboard input not moving object

Questions & Answers
1

So here is my code and a view of my inspector for my sphere that I am trying to get rolling around with the roll a ball tutorial. Also an image of my input settings. When I press the W button I get the message “W is pressed” and when I release the button I get the message “W is released”; however, the sphere does not move around. I can get similar messages with other buttons but still no movement. I have adjusted the speed to various values and I have seen similar posts and tried many of the solutions offered but with no success. I am using Windows 10 and Unity 5.3.5f1. Any assistance would be greatly appreciated. Thank you.

Code:

using UnityEngine;

using System.Collections;

public class PlayerController : MonoBehaviour
{

public float speed;
private Rigidbody rb;

void start()
{
    rb = GetComponent<Rigidbody>();
}

void Update()
{
    if (Input.GetKeyDown(KeyCode.W))
        Debug.Log("W is Pressed");
    if (Input.GetKeyUp(KeyCode.W))
        Debug.Log("W is released");
}

void fixedUpdate()
{

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

    Vector3 movement = new Vector3 (moveHorizontal, 0.0f, moveVertical);

    rb.AddForce(movement * speed);
}

}

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2

float speed = 5;

Update()
{
   float horizontal = input.GetAxis("Horizonta") * speed * time.deltatime;
   float vertical = input.GetAxis("Vertical") * speed * time.deltatime;

vector3 pos = new vector3 (horizontal,0vertical);
transform.translate(pos);
}