What can be said about the sign of the work done by the force f⃗ 1? ?

The diagram shows four locations in the electric field of a positive point charge m. at which location is the electric potential the greatest.

Am i correct on these two physics questions?

Which of the following is a true statement about the acceleration ~a of the pendulum bob ~a is equal to the acceleration due to gravity. ~a is perpendicular to the bob’s trajectory. ~a is equal to the instantaneous rate of change in velocity. ~a is tangent to the bob’s trajectory.