What does it mean to say that momentum is conserved? when momentum or any other object in physics doesn't change..... momentum = momentum before and after the collision. Elastic collision
The 2016 Springfield, Illinois, population is 116,565. There are 1,955 people per square mile (population density). The median age is 38.7. The US median is 37.4. 44.11% of people in Springfield, Illinois, are married. 14.83% are divorced.
From Wikipedia, the free encyclopedia. Springfield is a city in Effingham County, Georgia, United States. The population was 2,852 at the 2010 census, up from 1,821 at the 2000 census. The city is the county seat of Effingham County.