What is friction?
Without this force, it would be a very slippery world! Physical processes -Force and motion - Friction Learning Points Friction is the force between two surfaces rubbing together. A rough surface creates more friction than a smooth surface. A Twig Curriculum Film. Delivering key learning points. Get straight to the facts in just three minutes – directly linked to core learning, Twig's curriculum films will fit neatly into your lesson plans.
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