I now would like to write down, in most general form the equation for the position and the velocity as a function of time for a one-dimensional motion whereby the acceleration is constant.

Navigating crowded downtown streets, dealing with constant noise and general urban chaos can send even the most dedicated city dweller over the edge.

The favoured explanation is the so-called cosmological constant-an as-yet-unobserved consequence of the general theory of relativity.