A 3 Kg Ball of Putty Moving at 1 M/s Collides

Multiple Choice

A 3. kg ball of putty moving at 1 m/s collides and sticks to a 2 kg ball initially at rest. The putty and ball then move with a momentum of

A) 0 N-s.
B) 3 N-s.
C) 4 N-s.
D) 2 N-s.
E) 1 N-s.