Work done by gravity on a car rolling down a hill

[physicsmaster123]

I tried E =Fxcos0 but only ended up with 243kJ

 

[Ibix]

What values of $F$, $x$, and $\theta$ did you use and why?

 

[Ibix]

Hint: What is the textbook definition of $\theta$ in the formula you stated?

 

[haruspex]

I tried E =Fxcos0 but only ended up with 243kJ

What distance in the diagram is $50\cos(8°)$m?

 

[hmmm27]

Specific to this exercise, $W=\Delta E_P$ is a better fit than $W=Fd\cos \theta$