A mass m A = 2.0 kg, moving with velocity collides with mass m B = 3.0 kg, which is initially at…

A mass mA = 2.0 kg, moving with
velocity  collides with mass mB = 3.0 kg, which is initially at
rest. Immediately after the collision, mass mA is observed traveling
at velocity  Find the velocity of mass mB after the collision. Assume
no outside force acts on the two masses during the collision.