Velocity law (velocity vs. distance from the star) in two of our AGB wind models. Both models are based on the MARCS hydrostatic model with T_eff = 3500 K, log  g = −0.5, and solar chemical composition. The red model is computed with velocity at infinite of 12 km s^-1, mass-loss rate of 10^-8  M_⊙ yr^-1, and β exponent of 0.2. The blue model has a velocity at infinite of 6 km s^-1, mass-loss rate of 10^-7  M_⊙ yr^-1, and β exponent of 1.0. We note that a smaller step is taken where the velocity gradient is steepest.