The interaction between matter and energy is found everywhere. The term physics comes from a Greek word meaning nature. Mechanics is the study of objects, forces, and motion, and such properties of matter as elasticity and weight. The principles of mechanics tell us the meaning of weight, mass, force, energy, space, time, and rotational motion.
Sports show many good examples of the relationship between matter and energy.
For instance, a pitcher requires energy to throw a baseball at the incredible speed and accuracy that is needed to keep the batter from using his energy to try and hit the ball. On the other hand, the batter must be certain to keep the trajectory low enough so that the ball will reach the fence. Trajectory is also seen in basketball, where players must shoot the ball with enough arch to get over the front of the rim, and go through the hoop. The energy required to do this comes from not only the arms, but the legs as well. The study of light is called optics.