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.
Springfield is a city in Bon Homme County, South Dakota, United States. The population was 1,989 at the 2010 census, with about 1,200 of those residents being inmates at Mike Durfee State Prison.