Force of 92 N is exerted horizontally on an 18 kg box of books. The coefficient of kinetic friction between the floor and the box is 0.35. Find the net work done on the box.

Complete Question

Force of 92 N is exerted horizontally on an 18 kg box of books, initially at rest , 7.6 m across a floor . The coefficient of kinetic friction between the floor and the box is 0.35. Find the net work done on the box.

The value is  

Explanation:

From the question we are told that

     The force exerted is  

      The mass of the box is  

       The coefficient of kinetic friction is  

        The distance covered is  

Generally net workdone is mathematically represented as

Here   is the net force experienced by the box of books which is mathematically represented as

=>      

So

=>          

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)