A bag of mass M hangs by a long thread and a bullet (mass m) comes horizontally with velocity v and gets caught in the bag. Then for the combined system (bag + bullet)

A bag of mass M hangs by a long thread and a bullet (mass m) comes hor

1.	A bag of mass M hangs by a long thread and a bullet (mass m) comes horizontally with velocity v and gets caught in the bag. Then for the combined system (bag + bullet)
Answer» momentum is m `Mv"/"(M+m)` `KE" is "(1/2)Mv^(2)` Momentum is m `Mv"/"(M+m)M` `KE" is "m^(2)v^(2)"/"2 (M+m)` ANSWER :D