Two friends A and B (each weighing 40 kg) are sitting on a frictionless platform some distance d apart. A rolls aball of mass 4kg on the platform towards B which B catches. Then B rolls the ball has a fixed speed of 5 m/s on the platform.

Two friends A and B (each weighing 40 kg) are sitting on a frictionles

1.	Two friends A and B (each weighing 40 kg) are sitting on a frictionless platform some distance d apart. A rolls aball of mass 4kg on the platform towards B which B catches. Then B rolls the ball has a fixed speed of 5 m/s on the platform.
Answer» speed of A after he catches the ball for the FIRST time is `(10)/(11)m//s` Speed of A after he catches the ball for the first time is `(10)/(9)m//s` The centre of MASS of the system will REMAIN stationary irrespective of the direction of motion of the ball Centre of mass of system varies continuosly. Answer :A