I remember being taught in physics class that if you push a wall hard, all day and the wall does not move then you have done NO work. (sciencemag.org)
We all learned in high school physics class that matter is made up of molecules. (mindbodygreen.com)
It is estimated that 20 per cent of secondary mathematics classes and a similar percentage of physics classes are now taught by teachers who are teaching out - of - field. (teachermagazine.com.au)