Does the ability Sheer Force affect the move Smack Down? Specifically, does Sheer Force increase the power of Smack Down by 30% but remove its side effect of "knock[ing] the target to the ground"?
No, According to these sites, Smack Down is not effected by Sheer Force, so its effect will not be removed. Smack Down is not included on their lists of moves affected by Sheer Force.
This Site
Bulbapedia
Serebii
