A flight attendant pulls her 70 N flight bag a distance of 378 m along a level airport floor at a constant velocity. The force she exerts is 45 N at an angle of 59° above the horizontal.
(a) Find the work she does on the flight bag.
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(b) Find the work done by the force of friction on the flight bag.
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(c) Find the coefficient of kinetic friction between the flight bag and the floor.