How is kinetic energy expressed?

Kinetic energy is defined as the energy that an object possesses due to its motion. The expression for kinetic energy is derived from the work-energy principle, which states that the work done on an object is equal to the change in its kinetic energy.

The formula for kinetic energy is given by one-half of the mass of the object multiplied by the square of its velocity, which is mathematically represented as 1/2 x mass x velocity^2. This formula indicates that an increase in either the mass or the velocity of an object will result in a quadratic increase in kinetic energy; hence, even small increases in speed lead to significantly higher kinetic energy.

The other expressions provided relate to different physical concepts. The mass x gravity expression pertains to gravitational potential energy, mass x distance relates to weight or work done under constant force over a distance, and mass x force generally relates to the equation for force (Newton's second law), which describes the motion and acceleration of objects under the influence of forces.