A 1.0 kg m is connected to a spring with a spring constant of 9.0 N/m. If the initial velocity is 4.0 cm/s?

A 1.0 kg m is connected to a spring with a spring constant of 9.0 N/m. If the initial velocity is 4.0 cm/s and the initial displacement is 0.0 cm, then what is the maximum spring potential energy of the simple harmonic motion?