The magnitude of a 2-dimensional vector:
Direction of a 2-dimensional vector:
Resolving a 2-dimensional vector into its components:
Let the positive y-axis point upward and the positive x-axis point ot the left.
θ1 = (180 - 45) = 135
Two forces F1 and F2 with magnitudes 100 newtons and 120 newtons, respectively, act on an object at point P as shown in the figure (not to scale). Find the magnitude and direction of the resultant.
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