A 0.38 kg object connected to a light spring with a spring constant of 20.6 N/m oscillates on a frictionless horizontal surface. The spring is compressed 4.0 cm and released from rest. (a) Determine the maximum speed of the mass. x cm/s (b) Determine the speed of the mass when the spring is compressed 1.5 cm. x cm/s c) Determine the speed of the mass when the spring is stretched 1.5 cm. x cm/s (d) For what value of x does the speed equal one-half the maximum speed? X cm