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.
Bell County is a county located in the U.S. state of Texas. As of the 2010 census, its population was 310,235. Its county seat is Belton. The county was founded in 1850 and is named for Peter Hansborough Bell, the third governor of Texas. Bell County is part of the KilleenâTemple, TX Metropolitan Statistical Area. In 2010, the center of population of Texas was located in Bell County, near the town of Holland.