Work Power Energy Questions

A force $F=20+10y$ acts on a particle in $y$ -direction where $F$ is in newton and $y$ in meter. Work done by this force to move the particle from $y=0$ to $y=1\text{m}$ is:

An object of mass $500\text{g}$ initially at rest is acted upon by a variable force whose $x$ -component varies with $x$ in the manner shown. The velocities of the object at the points $x=8\text{m}$ and $x=12\text{m}$ would have the respective values of nearly: