What happens to the wheel:a.) if it flipped and is spinning in the opposite directionb.) if axis points towards horizontal directionc.) what are the differences of a and b

Please give your reasons to support your answers. a) What will happen if the bicycle wheel is suddenly ipped over so that it is spinning in the opposite direction? b) What will happen if the axis of the bicycle wheel is suddenly turned and points to the horizontal direction? c) What is the difference between these two cases