Skill 8 of 11
In Progress

Reference frames

If a bus brakes, it feels like you are squeezed forward in your seat – that is just a non-existing pseudo-force. You think you are pushed, because your eyes consider the bus as stationary.

Subscribe to valuable engineering skills for your resume or CV

Try full access with a 7-day free trial on all subscriptions.


Already subscribing? Log in:


  1. Online Etymology Dictionary’ (dictionary), Douglas Harper, www.etymonline.com
  2. Historical development of Newton’s laws of motion and suggestions for teaching content’ (article), Wheijen Chang, Beverley Bell and others, Asia-Pacific Forum on Science Learning and Teaching, vol. 15, issue 1, article 4, 2014, www.eduhk.hk/apfslt/download/v15_issue1_files/changwj.pdf
  3. Sears and Zemansky’s Univesity Physics with Modern Physics’ (book), Hugh D. Young & Roger A. Freedman, Pearson Education, 13th ed., 2012