A 873 g mass is connected to a light spring of force constant 4 N/m that is free to oscillate on a horizontal, frictionless track. the mass is displaced 2 cm from the equilibrium point and released from rest. Find the maximum speed.
a) 0.2 m/s
b) 0.4 m/s
c) 0.6 m/s
d) 0.8 m/s