OK, this has been bugging me for a while. Why is it that(adsbygoogle = window.adsbygoogle || []).push({});

[tex]\mathbf{v} \cdot \frac{d \mathbf{v}}{d t} = 1/2 v^2 [/tex]

where regular v is just the magnitude of bold v or more specifically where does the 1/2 coefficient turn up.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Dot product question

**Physics Forums | Science Articles, Homework Help, Discussion**