VPhysics

Vphysics are objects with physical characteristics (meaning they are affected by engine physics such as gravity or inertia).

This category includes physics props, physically simulated NPCs (like scanners, manhacks, rollermines), func_physbox entities, items that can be picked up (like weapon_smg1 or item_healthkit), thrown frag grenades, and combine AR2 energy balls.

The category contrasts to things hull simulated (like players, living (non physics based) NPCs, in-flight RPGs and SMG grenades) or ray simulated (bullets).

Entities handling vphysics are func_clip_vphysics and trigger_vphysics_motion.