Your question has been heard loud and clear.
M1 = 2kg , M2=2kg , V1=10m/s V2=5m/s
Total momentum before collision = M1V1+M2V2 = 2*10 + 2*5 = 30kgm/s
Now , by law of conservation of momentum ,
Total momentum before collision = total momentum after collision
Therefore , total momentum of objects before and after collision = 30kgm/s
Thank you