The use of force upon another person is justified under any of the following circumstances:

(1) A parent, guardian, or other person responsible for the care and supervision of a minor or an incompetent person, and a teacher or other person responsible for the care and supervision of a minor for a special purpose, may use reasonable and appropriate physical force upon the minor or incompetent person when and to the extent that he reasonably believes it necessary and appropriate to maintain discipline or to promote the welfare of the minor or incompetent person.

(2) A warden or other authorized official of a jail, prison, or correctional institution may, in order to maintain order and discipline, use whatever physical force is authorized by law.

(3) A person responsible for the maintenance of order in a common or contract carrier of passengers, or a person acting under his direction, may use reasonable physical force when and to the extent that he reasonably believes it necessary to maintain order, but he may use deadly physical force only when he reasonably believes it necessary to prevent death or serious physical injury.

(4) A person acting under a reasonable belief that another person is about to commit suicide or to inflict serious physical injury upon himself may use reasonable physical force upon that person to the extent that he reasonably believes it necessary to thwart the result.

(5) A duly licensed physician, or a person acting under his direction, may use reasonable physical force for the purpose of administering a reasonable and recognized form of treatment which he reasonably believes to be adapted to promoting the physical or mental health of the patient if:

a. The treatment is administered with the consent of the patient or, if the patient is a minor or an incompetent person, with the consent of his parent, guardian or other person responsible for his care and supervision; or

b. The treatment is administered in an emergency when the physician reasonably believes that no one competent to consent can be consulted and that a reasonable person, wishing to safeguard the welfare of the patient, would consent.