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A force F = (5i-4)N acts on a particle that undergoes a displacement Ar=(2i+2j). Find the angle between F and Ar a. 30 O

A force F = (5i-4)N acts on a particle that undergoes a displacement Ar=(2i+2j). Find the angle between F and Ar a. 30 O b. 50 O c. 83.6 O d. 45

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