9. Work & Energy

You push a box with a force given by the function $F\left(x\right)=13-0.6x$. Assuming there's no friction forces, and the box is initially at rest at $x=0$, how fast is the box moving after it has traveled a distance of $20m$?

A metal can is pushed from $x=0.5m$ with a force given by the function $F\left(x\right)=2e^{-2x}$. How much work is done by the force on the metal can?