ballVelCheck.cs

void OnCollisionEnter2D (Collision2D collision) {
		Vector2 xtweak = new Vector2 (Random.Range (-ballKick,ballKick),0f);
		Vector2 ytweak = new Vector2 (0f,Random.Range (2f,ballKick));
		
		if (hasStarted) {
			if(GetComponent<Rigidbody2D>().velocity.x >= -bounceTolerance && GetComponent<Rigidbody2D>().velocity.x <= bounceTolerance){
				print ("Engage X kick!");
				GetComponent<Rigidbody2D>().velocity += xtweak;
			} else if (GetComponent<Rigidbody2D>().velocity.y >= 0 && GetComponent<Rigidbody2D>().velocity.y <= bounceTolerance){
				print ("Engage Y kick!");
				GetComponent<Rigidbody2D>().velocity += ytweak;
			}
		}
}