Yes and no.

In an obvious sense the laws of physics are just there, whether you know what they are or not. Of course, on a basic level you can try to fight them - the obvious examples are when you try to use force to resist force, or if you try to block an attack from a much stronger and bigger person.

My teacher keeps asking me to explain his aikido in terms of physics - "Alex, you doctor of physics, you MUST understand this!". I have been struggling with this for years, to his evident frustration. I have come to the conclusion that on a basic level, the best way to comply with the laws of physics is to relax, and keep a comfortable and stable posture. Oh, and move at a right angle to your partner's strongest direction. But he says all these things already...

Alex