Working out at about 60% to 75% of your maximum heart rate (the so-called fat-burning zone) burns fewer calories than working out at 75% to 85% of your maximum heart rate (the so-called aerobic or cardio zone).
In physics, motion is a change in position of an object with respect to time. Motion is typically described in terms of displacement, distance (scalar) , velocity, acceleration, time and speed.
Medical Definition of dynamics. 1  1: a branch of mechanics that deals with forces and their relation primarily to the motion but sometimes also to the equilibrium of bodies. 2  2: psychodynamics. 3  3: the pattern of change or growth of an object or phenomenon personality dynamics population dynamics.