By adult child I assume you mean 18 and over...so
If an adult child(18+)(That is not mentally disabled) deliberately and knowingly hits a parent then the parent should call the police and have the adult child(18+) arrested for assault and/or battery and follow through with the charges and let them face criminal punishment for their crime....If the adult child is say 15-17 then police should be called and the child sent through the juvinle justice system and face punishment there...If a child will beat up on a parent then most likely that child will beat on their wife/husband and on any kids they may have in the future..
A parent can get the medical records of an adult child if the adult child gives express permission.
Is this a trick question? If the child is legally an adult (and therefore 'emancipated') then there is no "custodial" parent.
No, the child can not. The other parent could before the child was an adult. The money goes to the parent to use for the child and not directly to the child.
extremely unlikely
No. The custodial parent is/was the obligor, not the child.
No, they are not.
Only if you prove to be an "unfit" or bad parent. The parent that is an adult has not more rights to the child because they are an adult and you are not.
Only if the parent is the legal guardian of the child's person. If the child is a danger to herself or others, the parent can petition the courts for involuntary commitment.
No, the filing period ended at age 18 for the parent, and age 19 for the adult child.
No, child support is not paid to the child but to the parent raising the child.
The parent or responsible adult operating the vehicle and in charge of the child, like the sitter or another friend or relative.
No. What you suggest is not possible.