Fundamentally, momentum conservation is linked to invariance under space translations. See Noether's theorem. If you want to find a system that does not conserve momentum you should look for situations where space is not uniform, e.g. balls rolling on the surface of a bowl, a planetary system (when the dynamics of the sun is neglected), etc.
Socorro is a city in Socorro County in the U.S. state of New Mexico. It is in the Rio Grande Valley at an elevation of 4,579 feet (1,396 m). In 2012 the population was 8,906.
Mexico Population 1960-2017 | Data | Chart | Calendar | Forecast | News. The total population in Mexico was estimated at 122.3 million people in 2016, according to the latest census figures. Looking back, in the year of 1960, Mexico had a population of 38.7 million people. 1  Historical. 2  Forecast. 3  Alerts. 4  Data. 5  API.