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A sled is pulled across a horizontal snow surface with a constant velocity. The force being applied is 80 N at an angle of 53 degrees to the ground. What is the magnitude of the force of friction of the snow acting on the sled?

This question is from McGraw-Hill Ryerson Mathematics of Data Management grade 12 textbook, chapter 4.2, page 245, question 9: Roberta is a pilot for a small airline. If she flies to Sudbury three times, Timmins twice, and Thunder Bay five times before re...