Using the kinematic relation:
Given \(\Delta d = 3\times10^{8}\,\mathrm{m},\; v_0 = 0,\; \Delta t = 1\,\mathrm{s}\),
At high \(a^{\mathrm{eff}}\) (for example, 2c/s), photons maintain \(v=c\) due to the compensatory rise of the apparent mass \(-M^{\mathrm{app}}\) as energy reduces:
At escape: \(-M^{\mathrm{app}} \rightarrow -M^{\mathrm{app}},\; \Delta M_m \rightarrow 0\Rightarrow v = c\).
In Extended Classical Mechanics (ECM), a photon’s mass-frequency state is governed by the manifestation principle:
The effective acceleration at emission, \(a^{\mathrm{eff}}_{\text{photon}}\), is a variable, context-dependent parameter that describes the photon’s kinematic emergence over a chosen time interval. The effective acceleration varies inversely with the apparent mass according to the formal bookkeeping relation:
This relation is analogous to the frequency–wavelength law:
and remains dimensionally consistent when the mass–energy mapping is made explicit:
The corresponding force-like quantity is defined as:
In ECM this \(F_{\text{photon}}\) is self-generated by the photon (not an external force) and manifests as a repulsive effect directed away from the source.
This unified ECM framework explains the autonomous acceleration of photons at emission, linking apparent mass, effective acceleration, photon frequency, wavelength, and intrinsic repulsive force in a single internally consistent formalism.