Perfectly elastic collisions are those in which no kinetic energy is lost in the collision. Macroscopic collisions are generally inelastic and do not conserve kinetic energy, though of course the total energy is conserved as required by the general principle of conservation of energy.
Ector, Texas. Not to be confused with Ector County, Texas. Ector is a city in Fannin County, Texas, United States. The population was 695 at the 2010 census, up from 600 at the 2000 census.
Judge Edd B. Keyes Annex Building across from the Tom Green County Courthouse. Tom Green County is a county located on the Edwards Plateau in the U.S. state of Texas. As of the 2010 census, its population was 110,224. Its county seat is San Angelo. The county was created in 1874 and organized the following year. Tom Green County is included in the San Angelo, TX Metropolitan Statistical Area.