Goku vs. Darth Vader? who would win in this fight. yes darth vader can use his light saber.?

Are you guys serious? Obviously Goku, just one hit and Darth Vader is out of space, i mean what is he going to do, use the force? That only will tickle Goku; Lightsaber? Yea if he can hit Goku first which wont happen cause Goku is a million times faster than he is, what else he got? Goku the only thing he has to do is trow a simple kamehameha and or just a punch a thats it is over.