Homework Help: physics

Posted by zheane on Thursday, March 7, 2013 at 6:22am.

A flight attendant pulls her 70 N flight bag a distance of 253 m along a level airport floor at a constant speed. The force she exerts is 40 N at an angle of 53° above the horizontal

A) Find the work that she does on the flight bag
B) Find the work done by the force of friction on the bag

physics - drwls, Thursday, March 7, 2013 at 7:24am
A) 40 cos53*253 = 6090 J
B) All of her work is done against friction. Friction does -6090 J

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