Thus accelerating and decelerating from both ends. Most land vehicles rely on friction for accelerating, decelerating and changing direction. The springs also help to reduce squatting when accelerating and diving when decelerating. There are indications that deforestation and forest fragmentation are accelerating this gradual desiccation. It means that GDP growth is accelerating in 2016. Since the late 2000s, population growth in Melbourne has been accelerating. City driving involves a great deal of accelerating and braking. Propulsion methods can be classified based on their means of accelerating the reaction mass. It creates thrust by accelerating ions using electricity. In economics, hyperinflation is very high and typically accelerating inflation. The second approach to the problem of accelerating relativistic particles is the isochronous cyclotron. Economic urgency played a large part in accelerating the advocacy for repeal. Surface winds accelerating down valleys down the western Pacific ocean coastline, causing the winter monsoon. In this era, the expansion of the universe is accelerating due to dark energy. This supports the view that the expansion of the universe is accelerating.