Two rectangular blocks A and B with masses $2 \, \text{kg}$ and $3 \, \text{kg}$ respectively are connected by a spring with a spring constant of $10.8 \, \text{N/m}$. They are placed on a frictionless horizontal surface. Block 'A' is given an initial velocity of $0.15 \, \text{m/s}$ in the direction shown in the figure. The maximum compression of the spring during the motion is