Trying to apply force to an object

Questions & Answers
1

I’m trying to apply force to an object in the opposite direction of a public Vector2, although I don’t know what to put after the AddForce. I tried (-velo) but it didn’t do anything. Thanks for any help!

	public Vector2 velo;

	void OnCollissionEnter2D (Collider2D col) {

		if (col.gameObject.tag == "ground") {
			GetComponent<Rigidbody2D> ().AddForce ();
		}
	}

	void Update () {
		velo = GetComponent<Rigidbody2D> ().velocity;
	}
2

Your function OnCollissionEnter2D never gets called because it needs to be OnCollisionEnter2D (only one s).