A rubber ball of mass 95 g is dropped onto the floor. Just before it hits the floor, its speed is 4.4 m/s. It then rebounds upward, having a speed of 3.9 m/s just as it leaves the floor. What are the magnitude and direction of (to two significant digits) (a) its momentum just before hitting the floor? kg-m/s direction: (b) its momentum just after hitting the floor? kg-m/s direction: (c) its change in momentum? kg-m/s direction: