depression definition. A period of drastic decline in the national economy, characterized by decreasing business activity, falling prices, and unemployment. The best known of such periods is the Great Depression, which occurred in the 1930s.
A variometer â also known as a rate of climb and descent indicator (RCDI), rate-of-climb indicator, vertical speed indicator (VSI), or vertical velocity indicator (VVI) â is one of the flight instruments in an aircraft used to inform the pilot of the rate of descent or climb.
The red line is the average speed to smooth out the running velocity (vertical) over the 100m dash (horizontal). What you see is a steep curve flatting out around 30-40 meters and then slowing down slightly from 80-100 meters, the most common pattern with elite sprinters.