Function final_kinetic_energy_from_work 

pub fn final_kinetic_energy_from_work(
    initial_kinetic_energy: f64,
    work: f64,
) -> Option<f64>

Computes final kinetic energy from an initial kinetic energy and applied work.

Formula: KE_final = KE_initial + W

Returns None when initial_kinetic_energy is negative, when any input is not finite, when the computed result is negative, or when the computed result is not finite.