1. Scalar and vector quantities, contact and non-contact forces

Available for over a year

This podcast series is all about forces. In this episode, James Stewart and Ellie Hurer explore scalar and vector quantities as well as contact and non-contact forces. They discuss the differences and share some examples. Suitable for: AQA, Edexcel, OCR. For more information on scalar and vector quantities, check out the BBC Bitesize website: https://www.bbc.co.uk/bitesize/guides/zpqngdm/revision/1 Key learning objectives discussed in this episode: - Scalar quantities have magnitude only. - Vector quantities have magnitude and an associated direction. - A vector quantity may be represented by an arrow. The length of the arrow represents the magnitude, and the direction of the arrow the direction of the vector quantity. - A force is a push or pull that acts on an object due to the interaction with another object. All forces between objects are either: contact forces – the objects are physically touching, or non-contact forces – the objects are physically separated. - Examples of contact forces include friction, air resistance, tension and normal contact force. - Examples of non-contact forces are gravitational force, electrostatic force and magnetic force. - Force is a vector quantity. - Students should be able to describe the interaction between pairs of objects which produce a force on each object. The forces to be represented as vectors. Presenters: James Stewart and Ellie Hurer Editing and Sound Design: Sophie Ahmed, Rob Green and Adam Heaton Producer: Rufaro Faith Mazarura Executive Producer: Becky Green An Audio Always production for BBC Bitesize and BBC Sounds.