work problem?

Question

a flight attendant pulls her 70.0 N flight bag a distance of 253m along a level airport floor at constant velocity. The force she exerts is 40.0 N at the angle of 52.0 degree above the horizontal.Find the flollowing:
a)the work she does on the flight bag.
b.)the work done by the force of friction on the flight bag.
c.)the coefficient of kinetic friction between the flight bag and the floor.

Answer 1

a) 40*cos(52)*253
b) -40*cos(52)*253
c) 40*cos(52)=(70-40)*sin(52)*µk

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