The equation below shows the mathematical representation of spring potential energy (also called the elastic potential energy) of an object that is being acted upon by a linear ideal spring with a spring constant, k (also called the stiffness of the spring). A linear ideal spring either pushes or pulls (that is, it responds with a restoring force -of equal strength in either case) in direct proportion (k) to the distance it is either compressed or stretched away from its equilibrium position (also called its "relaxed length"). Match each term in the equation with the correct description from this list: (1) Spring Constant; (2) Distance from Equilibrium; (3) Spring Potential Energy Distance from Equilibrium Spring Constant Spring Potential Energy