Momentum is not conserved if there is friction, gravity, or net force (net force just means the total amount of force). What it means is that if you act on an object, its momentum will change. This should be obvious, since you are adding to or taking away from the object's velocity and therefore changing its momentum.
Somerville, Massachusetts. Somerville (/ËsÊmÉrvÉªl/ SUM-Ér-vil) is a city located directly to the northwest of Boston, in Middlesex County, Massachusetts, United States. As of 2010, the United States Census has the city with a total population of 75,754 people, and is the most densely populated municipality in New England.
15.5%. According to our research of Massachusetts and other state lists there were 12 registered sex offenders living in Somerville, Massachusetts as of April 04, 2017. The ratio of number of residents in Somerville to the number of sex offenders is 6,425 to 1. The number of registered sex offenders compared to the number of residents in this city is a lot smaller than the state average. Nearest city with pop. 200,000+: Boston, MA (4.8 miles , pop. 589,141).