Aglider with mass m = 0.230 kg sits on a frictionless horizontal air track, connected to a spring with force constant k = 4.50 n/m . you pull on the glider, stretching the spring 0.130 m , and then release it with no initial velocity. the glider begins to move back toward its equilibrium position (x=0). what is the speed of the glider when it returns to x=0?

what must the initial displacement of the glider be if its maximum speed in the subsequent motion is to be 3.00 m/s?