Presenter Spiro Liacos introduces students to the concept that speed is a measure of how far something travels in a given amount of time, looks at how speed varies in a sprint, explains the concept of velocity, and demonstrates a number of ways of measuring an object's speed.

Streaming video file encoded with permission for digital streaming by Infobase on June 13, 2016.

Speed: Introduction --(0:39) -- How Fast? -- (4:57) -- SI Units -- (3:35) -- Speed and Velocity -- (4:31) -- Converting between M/S and Km/Hr -- (4:09) -- Measuring Speed -- (2:55) -- Analyzing Speed -- (2:26) -- Credits: Shedding Light on Motion: Episode 1-Speed -- (0:29).