MadSci Network: Physics |
My best definition are: bump = sudden redirection of momentum with possible energy loss/transfer. friction = loss of energy or ability to do work due to contact forces. In my opinion, the difference is subjective. A bump is sort of a quantum of frictional force. When you get down to the microscopic surfaces, the difference may be a more distinct loss of contact in a bump. Concepts like slip-stick or inelastic collision will complicate the distinction. Sincerely, Tom "Belt Friction" Cull
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