1. Home
  2. Education
  3. Physics

Speed

By , About.com Guide

Definition: Distance travelled per unit time. Speed is the scalar quantity that is the magnitude of the velocity vector.

The SI units for speed are m / s (meters per second).

Explore Physics

About.com Special Features

A Smarter Future

Tips that will help finance your education, excel in the classroom, and advance your career. More >

How to Ace the GRE

Being well prepared is the first step; here are more essential suggestions. More >

  1. Home
  2. Education
  3. Physics
  4. Physics Dictionary
  5. Physics: Q to T
  6. Speed - definition of speed

©2009 About.com, a part of The New York Times Company.

All rights reserved.