Kinetic energy is…How slowly particles moveThe energy of motionHow hot particles areHow fast particles move

Kinetic energy is the energy of motion. It is directly related to how fast an object or particles are moving. The faster the particles move, the greater their kinetic energy. This concept is fundamental in physics and is mathematically represented as:

$KE = \frac{1}{2} mv^2$

where:

• $KE$ is the kinetic energy,
• $m$ is the mass of the object, and
• $v$ is the velocity of the object.

Thus, the correct answer is "The energy of motion." This definition emphasizes the relationship between energy and the velocity of particles or objects. Kinetic energy plays a crucial role in various physical systems and is a key concept in understanding mechanics, thermodynamics, and many other areas of physics.