A box of books that weighs 40N is dragged at a speed of 1.5 m/s across a rough floor. If the coefficient of friction between the floor and the box is 0.20, what is the rate at which heat energy is dissipated?
The Attempt at a Solution
My assumption would be if the units of power are watts, or kgm2/s3, breaking that up would be :
and the box weighs 40N, so kg*m/s2=40, and v=1.5m/s
With the coefficient of friction being 0.20,
would the answer be 40*1.5*0.2= 12W ?