(Solved): The figure shows a proton moving through a non-uniform electric field with the trajectory described ...

The figure shows a proton moving through a non-uniform electric field with the trajectory described by the solid black arrow. The equipotential curves are shown as green dashed lines. If the proton's speed at point A is $60,000\mathrm{m}/\mathrm{s}$, then what is the proton's speed at point $\mathrm{B}$ in $\mathrm{m}/\mathrm{s}$ ? (Hint: The electric force is a conservative force, so the particle's trajectory is irrelevant). Correct response: $106,135.153\mathrm{m}/\mathrm{s}\pm 5.0\%$