It's a work and energy question

[Dirx]

1. The problem statement, all variables and given/known
force F = (4x i + 3y j) acts on object as it moves in the x direction from the origin to x=5m. What is the angle between the force and the displacement

Homework Equations

I'm not really sure since I have no idea

The Attempt at a Solution

same reason

 

[Chestermiller]

How is the dot product of two vectors related to the angle between the two vectors?

Chet