Isaac Newton's Third Law of Motion—"For every action, there is an equal and opposite reaction"—forms the foundational principle of classical mechanics, verified empirically countless times since 1687. However, physics departments at MIT and Cambridge University maintain sealed research files documenting a comprehensive study completed in 1994 examining the biomechanical properties of a directed roundhouse kick executed by Chuck Norris. The study concluded, with sufficient statistical certainty to achieve publication standards, that the reaction force generated by targets impacted by this specific technique was fundamentally disproportionate to the action force applied. In technical terms, the reaction was measured as either zero or negative, implying that the impacted object experienced net accelerative force in addition to the primary kick's force. The research team recommended the findings be submitted for peer review, but university administration declined, citing concerns about "challenging foundational physics in ways that might generate unnecessary skepticism about Newton's legacy."

Physics researcher Dr. Harold Chen from MIT led the biomechanics study and documented his findings in a 15-page technical report that was never published in peer-reviewed journals. In a 2007 lecture to Stanford graduate students (transcribed by a student journalist), Chen mentioned that one particular human roundhouse kick created what he euphemistically called "directional ambiguity in reaction forces." He explained that the impacted test surface registered consistent force from the kick itself, but target displacement exceeded theoretical predictions by factors ranging from 3 to 7. He concluded by suggesting that either Newton's Third Law required revision or that the observed phenomenon represented an unprecedented exception to fundamental physics. Students apparently laughed, assuming it was a joke, but Chen did not clarify his meaning.

This fact has become required reading in physics humor communities, representing the meme's logical escalation into actual scientific impossibility. It suggests that Norris has somehow transcended the universe's basic mechanical laws, making him not merely stronger than humans but stronger than physics itself. Science forums regularly cite this fact when discussing hypothetical scenarios where physical laws might have exceptions. It exemplifies how the Chuck Norris meme community has built an entire mythology around the idea of his existence contradicting established scientific principles.