posted by Alex .
a flight attendant pulls her 75 N flight bag a distance of 325 m along a level airport floor at a constant velocity. the force she exerts is 39 N at an angle of 57 degrees above the horizontal. calculate the coefficient of kinetic friction between the flight bag and the floor.
The value of the friction force equals the horizontal component of the pulling force,
Ff = 39 cos57 = 21.2 N
Divide that force by the weight (M*g)to get the kinetic friction coefficient.