A Bullet (Mass = M₁)is Fired at Speed V into a Block

Multiple Choice

A bullet (mass = m₁) is fired at speed V into a block of mass m₂ at rest.If the bullet escapes from the block with only a third of its original speed then the recoil speed of the block is given by

A) m₁V/ 3m₂
B) 2m₁V/ 3m₂
C) m₂V/ 3m₁
D) 2m₂V/ 3m₁
E) 4m₂V/ 9m₁