This is seems like an easy question

[neotriz]

This is seems like an easy question...

Homework Statement

A single conservative force acts on a 5.00 kg particle. The equation Fx = (2x + 4) N describes this force, where x is in meters. As the particle moves along the x-axis from x = 2.20 m to x = 6.60 m.

Calculate the change in the potential energy of the system

Homework Equations

The Attempt at a Solution

Since it just only involves horizontally, I thought the Potential Energy would be zero, but it's telling me it's wrong.

?

 

[4t0mic]

I think you should look up relevant equations, like how work done by a conservative force F will be W = -ΔU where ΔU is the change in the potential energy. So W = Fd (force*distance) or W = Fdcosθ...