A $2\mathrm{.}5$ kg physics book, initially at rest, is pushed $1\mathrm{.}2$ m along a horizontal tabletop by a horizontal force of $2\mathrm{.}0$ N$.$ Assume there is no friction$\mathrm{.Determine\; the\; average\; power\; developed\; by\; the\; net\; force.}$