A ball is projected vertically upward with initial speed u and experiences a constant resistive force F in addition to gravity mg. During ascent the opposing force is (mg+F), while during descent the opposing force is (mg−F) because resistance acts upward. For the same vertical displacement upward and downward, determine which interval is longer by choosing one of the following within your explanation: (A) time of ascent, (B) time of descent, (C) both equal, (D) cannot be concluded.