Required information A 3.00-kg object is initially moving northward at 15.0 m/s. Then a force of 15.0 N, toward the east, acts on it for 4.40 s. At the end of the 4.40 s, what is magnitude of the object's final velocity? m/s ! -- Required information A 3.00-kg object is initially moving northward at 15.0 m/s. Then a force of 15.0 N, toward the east, acts on it for 4.40 s. What is the change in momentum during the 4.40 s? Take +y to be north and +x to be east. Enter a positive answer if the change in momentum is toward east and a negative answer if the change in momentum is toward west. kg-m/s