# Speed

Speed, abbreviated as s, is the rate of change or distance with time. Speed is a scalar quantity having no direction. Speed is not velocity, they do not mean the same thing.

## speed formula

\(\large{ s = \frac{ d }{ t } }\) |

### Where:

Units |
English |
Metric |

\(\large{ s }\) = speed | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) |

\(\large{ d }\) = distance | \(\large{ ft }\) | \(\large{ m}\) |

\(\large{ t }\) = time | \(\large{ sec }\) | \(\large{ s }\) |

## Related Speed formula

\(\large{ s = \frac{ 5252\; HP }{ \tau } }\) | (engine horsepower) |

### Where:

\(\large{ s }\) = speed

\(\large{ HP }\) = horsepower

\(\large{ \tau }\) (Greek symbol tau) = torque

Tags: Speed Equations