When the bus brakes, you feel pushed forward in your seat. When the car turns, you feel squeezed to the opposite side. When a merry-go-around spins, you feel like flying out.
But are you really being pushed forward, sideways and out of the circle? What is pushing you? Where does this pushing force come from?
- ‘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