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Physics Work,Power & Energy Level: High School

A flight attendant pulls her 70.0 N flight bag a distance of 257 m along a level airport floor at a constant speed . The force she exerts is 36.0 N at an angle of 52.0 degree above the horizontal .

(a) Find the work she does on the flight bag .

(b) Find the work done by the force of friction on the flight bag .

(c) Find the coefficient of kinetic friction between the flight bag and the floor