Potential energy is energy that is being stored. An example of potential energy is a mass held at a certain height. The higher the particle is off of the ground, the higher its potential energy. Refer to equation 1.

W = Weight

Δy = suspended height

U_{1-2} = Potential Energy

A compressed spring also has a stored potential energy. The potential energy gained by compressing or stretching a spring can be seen in equation 2.

k = spring constant

s_{2} = Initial spring length

s_{1} = New spring length

The variable k in equation 2 represents that spring constant, which represent the amount of deflection caused by a certain amount of force. Refer to equation 3.

f = force

δ = change in length

Kinetic energy on the other hand represents the amount of energy being expanded through motion. Kinetic energy is normally represented by equation 4.

m = Mass

v = velocity

T = Kinetic Energy

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