unity rb .add force towards vector 3 code example

Example 1: unity how to add force

public Rigidbody rb;

if(Input.GetKey(KeyCode.W))
{
	rb.AddForce(100, 0, 0);
}

Example 2: Rigidbody.addforce

using UnityEngine;public class ExampleClass : MonoBehaviour
{
    public float thrust = 1.0f;
    public Rigidbody rb;    void Start()
    {
        rb = GetComponent<Rigidbody>();
        rb.AddForce(0, 0, thrust, ForceMode.Impulse);
    }
}