This work presents a structured formulation of Extended Classical Mechanics (ECM) in which frequency (f) is established as the fundamental ontological parameter governing physical reality, while time (t) is treated as an emergent consequence of phase evolution rather than a pre-existing coordinate. The framework departs from the conventional interpretation f = 1/T by asserting that frequency is intrinsic and time is derived. Within this perspective, the relation E = hf is reinterpreted as a physical identity indicating that energy itself is a manifestation of frequency-governed phase dynamics. Consequently, temporal intervals arise from the accumulation of phase, expressed through t ∝ ϕ/f, making time a measurable outcome of underlying dynamical processes. The formulation further provides a coherent reinterpretation of established physical phenomena. Effects traditionally attributed to spacetime structure—such as time dilation—are described in ECM as consequences of frequency variation in physical systems, rather than geometric deformation. Similarly, cosmological observations such as redshift are interpreted as frequency shifts (Δf), offering an alternative description of cosmic evolution. By grounding physical description in operationally definable quantities—frequency, phase, and energy—this approach establishes a unified framework in which: Phase evolution governs dynamics, Energy expresses frequency, Time emerges from measurable phase progression. This perspective aims to address foundational inconsistencies by removing the assumption of time as an independent background parameter and instead treating it as a derived, system-dependent observable rooted in frequency dynamics.