Explore sports science as Ruff Ruffman races over different surfaces to rescue his plushie in this video from The Ruff Ruffman Show. Ruff’s plushie is buried in a prize load of kibble! To get it back, Ruff will have to get Steve, a very unfriendly llama, to pull him and 200 pounds of kibble over one of three surfaces: sand, grass or pavement. But which surface will get Ruff to the finish line the fastest? Watch to find out!

This video has been captioned in both English and Spanish. This resource is part of The Ruff Ruffman Show Science Collection.