Momentum is conserved in case of motion under gravity because a object is pulled by the earth and the earth of pulled by the object. The momentum terms of the object and earth cancel each other out as the object has small mass but high velocity and the earth has very high mass and very small velocity in the opposite direction of the velocity of the object.
Southwick, Massachusetts. Southwick is a town in Hampden County, Massachusetts, United States. The population was 9,502 at the 2010 census. It is part of the Springfield, Massachusetts Metropolitan Statistical Area.
Zip Code 01077 Description. Zip Code 01077 is located in the state of Massachusetts in the Springfield, MA metro area. Zip code 01077 is primarily located in Hampden County. The official US Postal Service name for 01077 is SOUTHWICK, Massachusetts. Portions of zip code 01077 are contained within or border the city limits of Westfield, MA, North Granby, CT, and Agawam, MA. The area code for zip code 01077 is 413.