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Fixed a bunch of typos and format errors.
'''Kinetic energy''' represents the [[energy]] asociated with the [[motion]] of an object.<ref>Serway and Beichner, ''Physics for Scientists and Engineers'', Fifth Edition</ref> It is defined as:
'''Kinetic energy''' represents the [[energy]] asociated with the [[motion]] of an object.<ref>Serway and Beichner, ''Physics for Scientists and Engineers'', Fifth Edition</ref> It is defined as:
K ≡ [[mass|m]][[velocity|v]]<small>2</small> / 2
K ≡ [[mass|m]][[velocity|v]]<sup>2</sup> / 2
The change of kinetic energy in an object is equal to the total [[work]] done on it by a [[force]]. In the case of constant force, this can be expressed as:
The change of kinetic energy in an object is equal to the total [[work]] done on it by a [[force]]. In the case of constant force, this can be expressed as:
Σ''W'' = ΔK = mv<sub>f</sub><small>2</small> / 2 - mv<sub>i</sub><small>2</small> / 2
Σ''W'' = ΔK = mv<sub>f</sub><sup>2</sup> / 2 - mv<sub>i</sub><sup>2</sup> / 2
Where v<sub>f</sub> is speed at t = 0 and <sub>i</sub><small>2</small> is speed at time = t.
Where v<sub>i</sub> is [[speed]] at t = 0 and v<sub>f</sub> is speed at [[time]] = t.
Kinetic energy is a scalar and has the same units as work (i.e. [[Joule]]).
Kinetic energy is a scalar and has the same units as work (i.e. [[Joule]]).