How would I make an object disappear after a set amount of time?

Questions & Answers
1

As the title says; I'm trying to make a gun script, I have the gun shooting as I wanted, but the cloned rigidbodies stick around, clogging up the game. How would I make them disappear after a set amount of time?

2

var lifeTime = 1.0;

function Awake () { Destroy (gameObject, lifeTime); }

Here you go. Next time use the search function because that has been answered several times.

3 
var destroyTime : Int; // This is the time in seconds
function Start(){

yield WaitForSeconds(destroyTime);
Destroy(gameObject);
}
// attach the script to the game object that is supposed to disappear. Good Luck =)
4

public class Dissapear : MonoBehaviour {

int lifeTime = 10;

public override void Start()
{
	StartCoroutine(WaitThenDie());
}

IEnumerator WaitThenDie()
{
	yield return new WaitForSeconds(lifeTime);
	Destroy(gameObject);
}

}