A $4\mathrm{.}00$ kg object is initially at rest on a horizontal surface. An applied force acts on the object in the $+$x $-$direction. Assume there is friction in the system as well. The Net Work done on the object is $60\mathrm{.}0$ J over a distance of $8\mathrm{.}00$ m $.$

a$)$ What is the object's Change in Kinetic Energy? Do Not Overthink this!

$\frac{1}{2}(4\mathrm{.}00)(8\mathrm{.}00{)}^{2}12J$

b$)$ What Net Force acted on this object?

$W_{{}_{}}=128-60\mathrm{.}0J6JJ$

c$)$ What is the speed of the object after moving $8\mathrm{.}00$ m $,$ starting from rest?

$\frac{68}{4\mathrm{.}09\mathrm{.}8(8\mathrm{.}0)}0\mathrm{.}217$