If $m_2{m}_1,$ then the final speed of object $1$ is greater than the final speed of object $2.$

If $m_2{m}_1,$ then $|vec(r{)}_1||vec(r{)}_2|$

If $m_1{m}_2,$ then the final speed of object $2$ is less than the initial speed of object $1.$

vec$(p{)}_{1,\text{i}\text{n}\text{i}\text{t}\text{i}\text{a}\text{l}}=$vec$(r{)}_{1,\text{f}\text{i}\text{n}\text{a}\text{l}}+$vec$(r{)}_{2,\text{f}\text{i}\text{n}\text{a}\text{l}}$