Studies in the biodemography of human longevity indicate a "late-life mortality deceleration law": that death rates level off at advanced ages to a late-life mortality plateau.
The trials included study of train behaviour like acceleration and deceleration, suspension, emergency brake distance and track parameters, and adherence to safety and technical specifications.
On the other hand, radio observations may look at events on a millisecond timescale (millisecond pulsars) or combine years of data (pulsar deceleration studies).
This deceleration was defined as state and working labor movements designing policies to shrink the scale of the economy as a solution to environmental degradation and their own consumptive requirements.
However, most commercial jet engines continue to produce thrust in the forward direction, even when idle, acting against the deceleration of the plane.