In this video I have discussed Co-ordinate System 2 and 3 dimensional Cartesian co-ordinate system plane polar co-ordinates Unit vectors in plane polar coordinates Velocity and acceleration in 2 dim., 3 dimensaional cartesian and polar coordinates This video is useful for students preparing for BSc Physics Master Cadre Physics GATE CSIR NET Physics IIT JAM Physics MSc Physics Entrance Exam #physicatube#velocityandacceleration