Centrifugal Force: the fictitious force
http://australianmuseum.net.au/Austra...
Highly commended, 2012 University of Sydney Sleek Geeks Science Eureka Prize - Primary
Sean Chionh, Andrew Lee & Kailey Wheatcroft
Caladenia Primary School
"Have you ever wondered why the Sun's gravity doesn't pull Earth in? This is because of centrifugal force. This exciting video explains what centrifugal force is, who discovered it and why it is important plus a little bit of humour."