Ki and Remaining Grounded
I'm two months into Aikido and had a question regarding Ki.
From all the techniques I've seen so far, nage always has their feet firmly planted on the ground. For Ki energy to be used, must nage be grounded?
For example, if you were standing relaxed with your arms at your side and a taller person came up from behind and grabbed you around the waist then lifted you off the ground, could Ki energy be used in any way to assist you in getting out of that situation?
Thanks in advance for all your responses.