Two particles of masses `m_(1) and m_(2)` move with velocities `upsilon_(1) and upsilon_(2)` towards eachother on a smooth horizontal surface. What is the velocity of their centre of mass ?

Two particles of mass 1 kg and 0.5 kg are moving in the same direction with speed of 2 m//s and 6 m/s respectively on a smooth horizontal surface. The speed of centre of mass of the system is

Two particles of mass 1 kg and 0.5 kg are moving in the same direction with speed of 2 m//s and 6 m/s respectively on a smooth horizontal surface. The speed of centre of mass of the system is

Two identical particles move towards each other with velocity 2v and v, respectively. The velocity of the centre of mass is:

Two masses, m_(1) and m_(2) , are moving with velocities v_(1) and v_(2) . Find their total kinetic energy in the reference frame of centre of mass.