A 3.8 kg object starting from rest falls through a viscous medium and experiences a resistive force R = -b v, where v is the velocity of the object. The acceleration of gravity is 9.8 m/s2 . If the object's speed reaches one-half its ter- minal speed in 5.018 s, determine the terminal speed. At what time is the speed of the object three- fourths the terminal speed? How far has the object traveled in the first 5.018 s of motion?