Newtonian mechanics
= Newtonian mechanics
{c}
{title2=$\mathbf F=m\mathbf a$}
Newtonian mechanics describes motion using forces, masses and acceleration in <inertial frames> with absolute time. It is the low-speed limit of <special relativity>; for constant <proper acceleration> with $|at|\ll c$, relativistic <hyperbolic motion> reduces to $x\simeq at^2/2$.