the ball dosen't move

Questions & Answers
1

using UnityEngine;
using System.Collections;

public class NewBehaviourScript : MonoBehaviour {

private 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);
}

}

2

if you’re posting here, you need to actually ask something. adding a subject like “the ball doesn’t move” - isn’t saying much…

that said, your problem is obvious - you’re assuming that unity will realize that when you use start() & fixedupdate(), you actually meant Start() & FixedUpdate()…

unity does not :wink: case is important.