The net force exerted on a particle acts in the positive x direction. Its magnitude increases…

The net force exerted on a particle acts in
the positive x direction. Its magnitude increases linearly from zero at x = 0,
to 380 N at x = 3.0 m. It remains constant at 380 N from x = 3.0 m to x = 7.0
m, and then decreases linearly to zero at x = 12.0 m. Determine the work done
to move the particle from x = 0 to x = 12.0 m graphically, by determining the
area under the Fx versus x graph.