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.
HIGHLIGHTS â Census of 2000: 1  The population of Grayville is approximately 1,725. 2  There are 754 households. 3  The approximate number of families is 478.  The distance from Grayville to Washington DC is 624 1  miles. The distance to Springfield, the state capital of Illinois is is 140 miles. (as the crow flies)