Most martial artists are not physicists, yet the forms of their practice conform to well-known physical laws, including those discovered many years ago by Isaac Newton. Important concepts include the relationship between force and acceleration and the conversation of linear momentum, all of which concern linear motion. Aikido, in particular, relies heavily on concepts appropriate to angular motion, as most Aikido movements are circular in form and involve angular velocity, angular momentum and its conservation. In this talk by Stanley Jeffers, associate professor emeritus and senior scholar at York's Department of Physics and Astronomy, the basic physics concepts involved are explained in a non-mathematical way with illustrations of their application to martial arts practice. The talk also features Kabir Bansil,1st kyu Aikido Yoshinkai, Ni Dan Tae Kwon Do.