Two forces, F, and F2, act at a point, as shown in the picture. (Figure 1) F1 has a magnitude of 9.40 N and is
directed at an angle of a = 55.0° above the negative x
axis in the second quadrant. F2 has a magnitude
of 5.20 N and is directed at an angle of B = 54.1 ° below
the negative x axis in the third quadrant.

1. explain how you calculate the net force in any direction on the box. 2. suppose an upward force of 15n is added to the box. what will be the net vertical force on the box? 3. what force could be applied to the box to make the net force in the horizontal direction zero? explain. 4. suppose a force of 25n to the right is added to the box. what will be the net force to the right?