Changes

'''Kinetic energy''' represents the [[energy]] associated with the [[motion]] of an object.<ref>Serway and Beichner, ''Physics for Scientists and Engineers'', Fifth Edition</ref> It is defined as the work done by a force to accelerate that object from rest to some speed <math> v </math>, in the absence of any other [[force|forces]] acting upon the object. Kinetic energy is a scalar and has the same units as work (i.e. [[Joule]]).  

'''Kinetic energy''' represents the [[energy]] associated with the [[motion]] of an object.<ref>Serway and Beichner, ''Physics for Scientists and Engineers'', Fifth Edition</ref> It is defined as the work done by a force to accelerate that object from rest to some speed <math> v </math>, in the absence of any other [[force]]s acting upon the object. Kinetic energy is a scalar and has the same units as work (i.e. [[Joule]]).  

==Classical mechanics==

==Classical mechanics==

</math>

</math>

For speeds encountered everyday, which are a lot less than that of [[speed of light|light] (such that <math>v<<c</math>), all terms apart from the first are very small and can be neglected. Hence, the formula reduces to:

For speeds encountered everyday, which are a lot less than that of [[speed of light|light]] (such that <math>v<<c</math>), all terms apart from the first are very small and can be neglected. Hence, the formula reduces to:

<math>K \approx \frac{1}{2} m_0 v^2</math>

<math>K \approx \frac{1}{2} m_0 v^2</math>