An ideal horizontal mass-spring system consists of a spring with stiffness 10 N/cm and a block with a mass of 2 kg that slides on a frictionless surface. The block has already been put into motion when you approach. You choose to start your stopwatch and set t = 0 s to be when the spring is neither stretched nor compressed and the block is moving to the right with a speed of 5 m/s. What is the maximum kinetic energy of the system? What is the maximum potential energy of the system?