Plane Waves in Fourier Series of Wavefunction as Quasiparticles with Action-Reaction?

A quantum wavefunction can be written as a Fourier series and it is believed the exp(ikx) components represent actual plane wave solutions with different weights. It has been argued in previous notes, that a bound state is a resonance of these plane waves which carry different weight fk. The system cycles through the different states with a frequency E as described by exp(iEt). It was also argued that P(x intersection p) equals W(x) fp sin(px) where W(x) is the wavefunction and sin(px) is a combination of a forward and backward plane wave. It was argued that sin(px) physically models the motion of a particle with zitterbwegung and is present even in the absence of a potential. It was also noted that W(x) fp sin(px) described the motion of one of these plane waves in space. Summing over the various p values leads to W(x)W(x) or the physical density. In classical physics, a particle has a velocity and potential energy at x1 and different values at x2 in accordance with energy conservation or Newton´s law. The objective of this note is to examine how Newton´s law is present in the motion of plane wave W(x) fp sin(px) in a bound quantum state