def bounce_easeout(pos):
    """
    Easing function for animations: Bounce Ease Out
    """
    if pos < 4 / 11.0:
        return (121 * pos * pos) / 16.0
    if pos < 8 / 11.0:
        return (363 / 40.0 * pos * pos) - (99 / 10.0 * pos) + (17 / 5.0)
    if pos < 9 / 10.0:
        return (4356 / 361.0 * pos * pos) - (35442 / 1805.0 * pos) + 16061 / 1805.0
    return (54 / 5.0 * pos * pos) - (513 / 25.0 * pos) + 268 / 25.0