Question

3.

 Vector A has a magnitude of 23 units and points in the positive y-direction. Vector B is added to A, giving a resultant vector A + B that points in the negative y-direction with a

 magnitude of 13 units. What is the magnitude and direction of B?

4.

 As you will see in a later chapter, forces are vector quantities, and the total force on an object is the vector sum of all forces acting on it.

 In the figure below, a force F1 of magnitude 6.20 units acts on an object at the origin in a direction θ = 31.00 above the positive x-axis. A second force F2 of magnitude 5.00 units acts on the object in the direction of the positive y-axis. Find graphically the magnitude and direction (in degrees counterclockwise from the +x-axis) of the resultant force F1 + F2.

Answer 1