Recent integrative approaches suggest that physics cannot be adequately characterized by magnitude-based distinctions alone, such as those implied by Big-P, little-p, and mini-p physics. While these categories capture differences in scope and historical impact, they fail to address the heterogeneity of physical activity itself. To remedy this, I propose the Five Fs of physics: force, friction, flux, formulation, and foundational structure.

Force physics concerns direct causal interactions involving pushes, pulls, and accelerations. These interactions are present across mini-p, little-p, and Big-P physics alike, from everyday embodied encounters to formal theoretical treatments. Force physics thus cuts across P-levels without being reducible to any one of them.

Friction physics captures resistive, dissipative, and constraining aspects of physical systems, including drag, loss, and entropy-increasing processes. Frictional considerations often dominate little-p applied physics, yet they also appear in Big-P contexts, such as theoretical treatments of irreversibility. Friction physics therefore operates independently of creative magnitude.

Flux physics refers to continuous change in physical quantities, including energy transfer and dynamic equilibria. Flux is central to many areas of formal and Big-P physics, though intuitive encounters........

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