Addition by 1. Components: Three forces, 
1, 
2, and 
3, all act on an object, as shown in the figure. The magnitudes of the forces are: F1 = 80.0 N, F2 = 60.0 N, and F3 = 40.0 N. The resultant force acting on the object is given by 
A. 180 N at an angle of 60.0° with respect to +x-axis.
B. 60.0 N at an angle of 90.0° with respect to +x-axis.
C. 20.0 N at an angle of 34.3° with respect to +x-axis.
D. 35.5 N at an angle of 34.3° with respect to +x-axis.
E. 40.0 N at an angle of 60.0° with respect to +x-axis.
Answer: D
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