Final answer:
Terry v. Ohio is the case that specified the conditions under which non-deadly force could be used to apprehend suspected felons.
Step-by-step explanation:
Terry v. Ohio is the case that specified the conditions under which non-deadly force could be used to apprehend suspected felons. In this case, the U.S. Supreme Court established the rule that the police may stop and frisk a person if they have a reasonable suspicion that the person has committed or is about to commit a crime and if they have a reasonable suspicion that the person is armed and dangerous. This ruling allows the police to use non-deadly force to protect themselves and others when apprehending suspected felons.