What is the primary difference between using physical contact and physical force?

The primary difference between using physical contact and physical force lies in the concept of overcoming physical resistance. Physical contact may involve simply touching or interacting with another person in a non-aggressive way, such as guiding someone or helping them move. It does not imply any intent to overpower or control the individual.

In contrast, physical force is specifically employed to apply enough strength or intensity to overcome a person's resistance, particularly in a situation where compliance is necessary for safety or de-escalation. This distinction is essential in understanding the appropriate use of force within law enforcement or security contexts, as it directly relates to the legality and ethical considerations surrounding the application of force.

The other options focus on different aspects of interaction with subjects. While duration of engagement, complete control over the subject, and reducing harm are all important factors in managing physical interactions, they do not precisely define the difference between merely making contact with someone and actively using force to gain compliance. Hence, the focus on overcoming physical resistance is what sets apart physical contact from the application of physical force.