If A detains B against his will through physical force, is this considered false imprisonment?

The answer is correct because false imprisonment is defined as the unlawful restrained of an individual's freedom of movement. In this scenario, A's use of physical force to detain B against his will directly constitutes an act of false imprisonment. The act of physically confining B means that A has taken away B's liberty to move freely, satisfying the essential elements of false imprisonment.

For false imprisonment to be established, it does not require that A inflict harm on B. The act of confinement itself, through physical force, is sufficient for B to claim false imprisonment. Similarly, the fact that B may or may not be able to escape easily does not change the nature of A's act; if A prevents B from leaving, A's conduct is still unlawful.

Furthermore, B's submission to A does not factor into whether false imprisonment occurs; A’s initial act of physically restraining B stands as the key point of concern. Therefore, the actions taken by A to confine B make it clear that false imprisonment has taken place, regardless of B's ability to escape or any harm that may or may not have resulted.