Contact Forces (video) | Khan Academy
https://www.khanacademy.org:443/science/mechanics-essentials/xafb2c8d81b6e70e3:could-a-coin-dropped-from-a-tall-building-kill-you/xafb2c8d81b6e70e3:visualizing-forces-free-body-diagrams/v/contact-forces-dynamics-ap-physics-1-khan-academy
WEBAbout. Transcript. In order for objects to exert a contact force, the objects must be touching. Common examples of contact forces include tension, the normal force, and friction. Contact forces arise due to a large number of long-range forces acting over very small scales. Created by David SantoPietro. Questions. Tips & Thanks.
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