No one would be able to stop moving, and the ball wouldn't stop moving.
The answer is financial responsibility laws.
under the financial responsibility law, drivers required to show proof that they can pay the damage in acidents. Failure to demonstrate this proof will resulted in our Driver license or vehicle registeration will get suspended. All party involve in the accidents must show the necessary proof
The idea of citizenship has expanded to include all people who fulfill certain criteria, and in principle anyone can obtain a citizenship of many countries if they work towards it thought the process of naturalization.
In the past, citizenship was often limited: it included only men (as in ancient Greece) or only certain ethic groups (as in the case of Early US).