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 Robertson County, Tennessee, United States. The population was 14,329 at the 2000 census. It is the county seat of Robertson County. Springfield is located at 36Â°29â²58â³N 86Â°52â²43â³W / 36.49944Â°N 86.87861Â°W / 36.49944; -86.87861 (36.499508, -86.878717). According to the United States Census Bureau, the city has a total area of 12.2 square miles (31.6 kmÂ²), all of it land.