code in C#

Unity Engine
1

HI
In this days Im learning C#
and a lot of time a go I wrote this code from a tutorial of pong creation:

var cSpeed : float = 10.0;
var sFactor : float = 10.0;
function Start() 
{
rigidbody.AddForce(20,0,0);
}

function Update() 
{
var cvel = rigidbody.velocity;
var tvel = cvel.normalized * cSpeed;
rigidbody.velocity = Vector3.Lerp(cvel,tvel,Time.deltaTime*sFactor);
}

and I wanted to ask how it will look like in C#?
and if can u explain on the “vector3.lerp” thing
thx for the help

2 
using UnityEngine;
using System.Collections;

public class Player : MonoBehaviour
{
    float cSpeed = 10.0f;
    float sFactor = 10.0f;

    void Start()
    {
        rigidbody.AddForce(20f, 0f, 0f);
    }

    void Update()
    {
        Vector3 cvel = rigidbody.velocity;
        Vector3 tvel = cvel.normalized * cSpeed;

        rigidbody.velocity = Vector3.Lerp(cvel, tvel, Time.deltaTime * sFactor);
    }

}
3

thx for the help:)