Consider the undamped free vibration represented by the block and spring model in the figure below. The time-dependent path of motion of the block can be given by kx = m(d2x/dt2). This equation can be rearranged into a standard form as d2x/dt2 + n2 = 0, where n = (k/m). What does the n term represent? Group of answer choices The natural frequency. The equilibrium position. The time. The angular velocity