Two forces can be added together to find a resultant force. In the diagram of a toy trailer below, when two children pull on the handle, one with a force of 3 newtons (N) to the left and one with ...

Science presenter Jon Chase explains friction. He describes how friction opposes or prevents motion, and demonstrates the force in action with an experiment involving two interleaved books.

Watch the thrilling showdown between monster magnets and intricate magnetic sculptures in mesmerizing slow motion. Experience the raw power of magnetic forces as they collide, twist, and reshape in an ...