Answer to Question #27294 in Physics for yogesh rai

Question

Consider a system of three equal mass particles moving in a plane; their positions are given by ai^+bj^
For particle 1, a1=3t^2+4, b1=0
For particle 2, a2=7t+5, b2=2
For particle 3, a3 = 2t ,b3 = 3t+4
Determine the position and velocity of the centre of mass as functions of time.