# Kinetic Energy

Written by Jerry Ratzlaff on . Posted in Kinematics

Kinetic energy, abbreviated as KE, is the energy an object possesses by virtue of its motion.  If it moves, it has kinetic energy.

## Kinetic Energy Types

• Mechanical Energy  -  The sum of the change in kinetic energy and potential energy generating from the force of gravity, external forces or the movement released in machine movement.
• Radiant Energy (electromagnetic)  -  Energy transmitted without the movement of mass.
• Sound Energy  -  Energy that we can hear.  It is a type of kinetic energy that moves through the air and other matter in the form of sound waves.

## Kinetic energy formula

$$\large{ KE = \frac{1}{2} \; m \; v^2 }$$
Symbol English Metric
$$\large{ KE }$$ = kinetic energy $$\large{ lbf-ft }$$ $$\large{J}$$
$$\large{ m }$$ = mass $$\large{lbm}$$ $$\large{kg}$$
$$\large{ v }$$ = velocity $$\large{\frac{ft}{sec}}$$ $$\large{\frac{m}{s}}$$