posted by frances .
You push your physics book 1.50 m along a horizontal tabletop with a horizontal force of 2.40N. The opposing force of friction is 0.60N.
a) how much work does your 2.40N force do on the book?
b) what is the work done on the book by the friction force?
c) what is the total work done on the book?
Work = Force exerted times distance in the direction of the force.
a) 2.4*1.5 J
b) -.6*1.5 J