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.
Sponsored Topics. Springfield is a city in and county seat of Washington County, Kentucky, United States. The population was 2,634 at the 2000 census. It was established in 1793 and probably named for springs in the area. Springfield is located at 37Â°41â²11â³N 85Â°13â²19â³W / 37.68639Â°N 85.22194Â°W / 37.68639; -85.22194 (37.686328, -85.221955).