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.
Chambers County, Texas. Chambers County is a county in the U.S. state of Texas. As of the 2010 census, the population was 35,096. The county seat is Anahuac. Chambers County is included in the Houston-The Woodlands-Sugar Land, TX Metropolitan Statistical Area.