2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/89852For a one-dimensional stationary system, we derive a third order equation of motion representing a first integral of the relativistic quantum Newton's law. We then integrate this equation in the constant potential case and calculate the time spent by a particle tunneling through a potential barrier.10 pages, LateX, no figures, minor changesQuantum PhysicsHigh Energy Physics - Theorytext