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.
ECISD calendar year BY DIANNA WRAY Odessa American. State law requires school districts to provide 180 instructional days per school year, but the Ector County Independent School District has averaged between 174 and 176 calendar days for the past decade. The committee working on next yearâs calendar is shooting for 176 student instructional days. State law requires school districts to provide 180 instructional days per school year, but the Ector County Independent School District has averaged between 174 and 176 calendar days for the past decade.