Question

define the formula for work done by a constant force

Answer 1

If that force is constant then the work done by the force is the dot product of the force with the displacement: W=F⃗ ∙d⃗ . W = F → ∙ d → . The net work done on an object (the work of the net force) is equal to the energy added to the object.

Answer 2

The work done by a constant force is proportional to the force applied times the displacement of the object.