If mass a is 1.0 kg, mass b is 5.0 kg, and the frictionless pulley has a mass of 0.5 kg and a radius of 0.15 m, what is the velocity of a and b at 0.5 seconds? a. a = -3.27 m/s, b = 3.27 m/s c. a = 3.27 m/s, b = -3.27 m/s b. a = 1.82 m/s, b = 0.18 m/s d. a = 0.18 m/s, b = 1.82 m/s