Two particles P and Q move towards with each other from rest with the velocities of 1 and 20 ms^(-1) under the mutual force of attraction. The velocity of centre of mass is

Two particles P and Q move towards with each other from rest with the

1.	Two particles P and Q move towards with each other from rest with the velocities of 1 and 20 ms^(-1) under the mutual force of attraction. The velocity of centre of mass is
Answer» `20 MS^(-1)` `20MS^(-1)` `30 ms^(-1)` zero Answer :D