Can energy of an object be kinetic AND potential?

[Vee9]

http://i1097.photobucket.com/albums/...cs_/Energy.jpg

When the ball is at the bottom of the ramp, can it's energy be
E = mgh + 0.5mv^2 ?
Or is it's energy strictly 0.5mv^2?

I set the zero line at where the ball leaves the ramp, so that's why I'm confused.

 

[kudoushinichi88]

Can't see the image...

But yes, total energy must include both potential and kinetic energies. The potential energy of the ball depends on where you define your zero line.

Since you define the zero Ep at the top of the ramp, then at the bottom of the ramp the h would be a negative value.

 

[rock.freak667]

Since your zero line is at the top of the ramp, at the bottom it would be mgh+0.5mv^2.

 

[Vee9]

Can't see the image...

But yes, total energy must include both potential and kinetic energies. The potential energy of the ball depends on where you define your zero line.

Since you define the zero Ep at the top of the ramp, then at the bottom of the ramp the h would be a negative value.

Sorry, the image is here: http://i1097.photobucket.com/albums/g349/Physics_/Energy.jpg
And I set the zero at the bottom of the ramp, just where the ball would leave the ramp.
Sorry for any confusion.