33. The block shown in the figure is released from rest when thespring is stretched a distance d. If k = 75 N/m, m = 0.5 kg, d =10 cm, and the coefficient of kinetic friction between the blockand the horizontal surface is equal to 0.25, what is the speed ofthe block when it first passes through the position for which thespring is unstretched. (Gravitational acceleration g = 10 m/s2)