A flight attendant pulls her 70.0 N flights bag a distance of251 m along a level airport floor at a constant speed. The force she exerts is 31.0 N at an angle of 52.0° above the horizontal.
1. Discover the work she does on the flight bag
2. Discover the work done by the force of friction on the flight bag.
3. Find the coefficient of kinetic friction among the flight bag and the floor.