Why does a superball change spin directions when I bounce it spinning one way?

Answer 1

Same thing happens in the game of billiards, or pool.
The spin of a ball we call "English", and you can make the ball do some amazing thins using english. When the ball strikes the bumper, or rail, the spin will change IF THE BALL IS GOING IN A DIRECTION THAT IS OPPOSITE OF THE SPIN. When you set the ball in motion, you change the energy to inertial. That gives the ball its force, and when it strikes any surface, if the spin is not rolling into the object that it will strike, the inertial energy changes direction due to friction energy of the surface of the two objects. This applies to every thing in our universe, including planets. If it is round,
spinning, and moving, it applies. Try this with a frisbee, and
see what happens. In the case of the frisbee, there is not enough inertial energy for it to continue. It stops, which is changing direction, but if the strike is with the roll, it will continue, but just bounce off.

Answer 2

Because it hits an inperfection in the floor, wall, or what ever surface that it strikes and sents it astray

Answer 3

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