Maximum Speed in Spring-Mass System

During an experiment, a scientist investigates the relationship between work and energy using a spring system. A spring with a spring constant of 200 N/m is compressed 0.1 m from its equilibrium position. The scientist then releases the spring, allowing it to do work on a 2 kg mass attached to it. Assuming no energy loss due to friction or air resistance, calculate the maximum speed of the mass as the spring returns to its equilibrium position.