How Unity rigid body controls the movement and rotation of objects

How to control the movement of the tank in this scene? At this time, we need to add a rigid body to the tank, and realize the movement effect of the tank through script control.

At the same time, we create a script to achieve the movement effect and place the script on the tank.

public class TankMovement : MonoBehaviour {
    
    
    
    //设置一个移动速度
    public int speed = 5;
    private Rigidbody rigidbody;
    //设置一个角速度  
    private int angularSpeed = 10;
	// Use this for initialization
	void Start () {
    
    
        rigidbody = GetComponent<Rigidbody>();
	}
	 
	// Update is called once per frame
	void Update () {
    
    
		
	}

    //固定帧调用，一般使用场景为物理移动 
    void FixedUpdate()
    {
    
    
        float h = Input.GetAxis("Horizontal");  
        //垂直方向W S 为前后移动
        float v = Input.GetAxis("Vertical"); 
        //刚体自身设置一个移动速度，transform.forward代表自身的前方向移动，
        rigidbody.velocity = transform.forward * v * speed;
        // 刚体自身设置一个角速度 
        rigidbody.angularVelocity = transform.up * h * angularSpeed;
    }
}