var FINISH_Y = HEIGHT - element.getWidth();
        var START_Y = element.getY();

        var ACC = 0.2;

        var vy = 0;

        var anim = new Konva.Animation(function(frame) {
            vy += ACC;
            element.setY(element.getY() + vy);

            console.log(ACC);

            if(element.getY() >= FINISH_Y) {
                vy *= -1;
                ACC += 0.1;
            }
            if(ACC >= 1) {
                anim.stop();
            }

        }, layer);