The swan was seen as a traditional symbol of beauty and grace in ancient Greece, and was sacred to Aphrodite. The swan was also sacred to Apollo, the god of music (among other things), in Greek mythology. At the time, the people believed that the swan sang a sweet and beautiful song when people died.
For example, in case of monatomic gas it is just a kinetic energy of motion of atoms of gas as measured in the reference frame of the center of mass of gas. In case of molecules in the gas rotational and vibrational energy is involved.
Kinetic energy is the energy of mass in motion. The kinetic energy of an object is the energy it has because of its motion.erhaps the most important property of kinetic energy is its ability to do work. Work is defined as force acting on an object in the direction of motion. Work and energy are so closely related as to be interchangeable.