【はじめてのUnity(10)】ブロック崩しゲームの作り方(3D)

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BallScript : MonoBehaviour
{
    //１）Rigidbodyが扱える変数を用意
    private Rigidbody rb;

    // Start is called before the first frame update
    void Start()
    {
        //２）Rigidbodyを取得して代入
        rb = GetComponent<Rigidbody>();

        //３）右奥方向に力を加える（x,z軸）
        //[3-1]力を加える方向を決める
        Vector3 myDirection = new Vector3(5, 0, 5);

        //rb.AddForce(力を加える方向, 力の加えるモード);
        rb.AddForce(myDirection, ForceMode.Impulse);// [3-2]インパルスモードで瞬間的に力を加える

    }

    // Update is called once per frame
    void Update()
    {
        
    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BarScript : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        //１）左右の入力を取得（左が押されたのか、右が押されたのか）
        float myX = Input.GetAxis("Horizontal");

        //２）位置情報の変更
        //transform.position += new Vector3(x, y, z);
        transform.position += new Vector3(myX * 5, 0, 0) * Time.deltaTime;

    }
}

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class BlockScript : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
        
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    //１）当たったら
    private void OnCollisionEnter(Collision collision)
    {
        Destroy(gameObject);//ここでのgameObjectはBlockのこと
    }
}