Which G force relates to gravitational impact from vertical movement?

The correct answer is related to the concept of how the body experiences forces due to vertical movement, specifically in the context of acceleration or deceleration. Negative G force refers to the forces acting downward on the body, typically experienced during rapid descent or when an aircraft suddenly loses altitude. This force pulls the body in the opposite direction of what is considered normal gravitational force, creating a sensation that the body is being lifted out of the seat or environment.

In contrast, positive G force is associated with the sensation of increased weight when ascending or during maneuvers that increase vertical speed. Transverse G force is concerned with forces acting side to side, while angular G force relates to the forces experienced during rotational movements. Therefore, when discussing the specific gravitational impact associated with vertical movement, negative G force is indeed the correct designation.