The coefficient of drag (CD) for a cube of edge length, 600 pm, falling freely under gravity in a stationary liquid of density, 1000 kg/m3 with a terminal velocity of 0.15 m/s was reported to be 0.7. The drag force acting on this particle is Select one: O a. 3.5 uN O b. 2.8 IN O c. 5.0 un O d. None of the above