An object moves due east at constant speed. A net force directed due north then acts on the object for 5.0 s. At the end of the 5.0-second period, the net force drops to zero newtons. Which one of the following statements is necessarily true?
(a) The object will be moving eastward when the force drops to zero newtons.
(b) The change in the velocity of the object will be directed north of west.
(c) The direction of the object's acceleration depends on how fast the object was initially moving.
(d) The final velocity of the object will be directed north of east.
(e) The magnitude of the object's acceleration depends on how fast the object was initially moving.