Two horizontal forces, F1 and F2, are acting on a box, but only F3 is shown in the drawing. F2 can point either to the right or to the left. The boxmoves ody along the x axis. There is no friction between the box and the surface. Suppose that F1=+5,1N and the mass of the box is 3.6kg. Find the magnitude and direction of F2 when the acceleration of the box is (a)+5.6m/s2,(b)5.6m/s2, and (c)0m/s2