Two blocks of mass 3 kg and 6 kg resp are placed on a smooth horizontal surface. They are connected by a light spring of force constant k=200 N/m. Initially the spring is unstretched.Velocity of 1 m/s is imparted to the block of mass 3 kg and vel of 2 m/s is imparted to the 6 kg block. The velocities are in opposite directions(such that they are moving away from each other). Find the maximum extension in the spring.