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.
The population density in Springfield is 2173% higher than Missouri. The median age in Springfield is 14% lower than Missouri. In Springfield 89.20% of the population is Caucasian. In Springfield 4.11% of the population is African American. In Springfield 1.95% of the population is Asian.