Question- Two identical objects, each of rest massm_{0}, moving with equal but opposite velocities of 0.50cin the laboratory reference frame, collide and stick together. Theresulting particle is at rest with mass M_{0}. Determine anexpression for M_{0} in terms on m_{0}.

From what I understand, this is a type of rest mass problem usuallygiven in modern physics courses. I came across this one day andtried to attempt it, but could not get anywhere because I could notunderstand what they meant by determining an expression forM_{0} in terms of m_{0}. Is somebody able to helpme determine an expression for this problem?