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 what is the kinetic energy of 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 what is the kinetic energy of the combined system (bag + bullet)
Answer» ANSWER :`m ^(2) V ^(2) //2 ( M + m)`