Does a roller coaster have both kinetic and potential energy at every point?

[njuice8]

Hi, I am calculating energy (if there were to be no energy lost due to friction, etc) for this roller coaster.

I understand that at point A there is only GPE and that at point E there is only KE.
I was wondering if there would be both KE and GPE at point B and C.
Would there be both KE and GPE at point D as well?

Thanks!

 

[Simon Bridge]

The car has gravitational potential energy at all points - including at E.

At E you are arguing that the GPE lost dropping from the height at A to the height at E as been turned into additional kinetic energy. So, you use the same argument for all the other points.