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.
Brownian motion is one of the fundamental studies in physics, and has had far-reaching consequences. Later physicists, such as Einstein and Smoluchowski used it to prove the existence and movement of atoms and molecules.