Aball is released at the point x = 2 m on an inclined plane with a nonzero initial velocity. after being released, the ball moves with constant acceleration. the acceleration and initial velocity of the ball is described by one of the following cases: case 1 a > 0 v0 > 0; case 2 a > 0 v0< 0; case 3a< 0 v0 > 0; case 4a < 0 v0 < 0
(a) in which of these cases will the ball definitely pass x = 0 at some later time?
(b) in which of these cases is mo/re information needed to determine whether the ball will cross x = 0?