Create and animate a sphere

polySphere -r 1 -sx 20 -sy 20 -ax 0 1 0 -cuv 2 -ch 1;
setKeyframe -at ty -v 0 -t 0sec -breakdown 0 -hierarchy none -controlPoints 0 -shape 0;
setKeyframe -at ty -v 3 -t 1sec -breakdown 0 -hierarchy none -controlPoints 0 -shape 0;
setKeyframe -at ty -v 0 -t 2sec -breakdown 0 -hierarchy none -controlPoints 0 -shape 0;