FTP, name this quantity, the second time derivative of the position vector, which appears in Newton's second law with force and mass.
The equation of this name, sometimes known as the second Friedmann equation, can be derived by substituting the fluid equation into the time derivative of the first Friedmann equation. For an incompressible Newtonian fluid, the viscous term in the Lagrangian form of this quantity is given by the kinematic viscosity times the Laplacian of the velocity. A moving charged particle radiates power proportional to the square of the charge times the square of this quantity, according to Larmor's formula. Its cgs unit is the Galileo, and like Matt Weiner, its time derivative is known as the jerk. FTP, name this quantity, the second time derivative of the position vector, which appears in Newton's second law with force and mass.
The equation of this name, sometimes known as the second Friedmann equation, can be derived by substituting the fluid equation into the time derivative of the first Friedmann equation.
{acceleration}