For example in case of explosion of a particle into many fragments momentum is conserved in the x direction but not in the y direction where gravity is acting but if we consider the particle and Earth as a system the gravity force becomes an internal force and hence momentum is conserved for that system.
Compared to the rest of the country, Soldotna's cost of living is 26.90% Higher than the U.S. average. As of 2014, Soldotna's population is 4,209 people. Since 2000, it has had a population growth of 11.91 percent. Average Commute time is 15 minutes.
1 Okotoks population in 2011 was 24,511 and in 2006 it was 17,150 people. 2  42.9% growth in population in a 5 year period (2006-2011). 3  Population density per square kilometer: 1,273.8 in 2011 versus 924.4 in 2006. Okotoks populations as of June 2015 Municipal Census: 28.016 or 2.5% increase from 2014. 2  Okotoks populations as of June 2014 Municipal Census: 27,331 or 3.8% increase from 2013. 3  Okotoks population as of June 2013 Municipal Census: 26,319 or 5.1% increase from 2012.