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Coelho, Ricardo Lopes – Science & Education, 2010
Some physicists have pointed out that we do not know what force is. The most common definition of force in textbooks has been criticized for more than two centuries. Many studies have shown that the concept of force is a problem for teaching. How to conceive force on the basis of the concepts and criticism of force in the works of Newton, Euler,…
Descriptors: Textbooks, Physics, Motion, Scientific Concepts
Coelho, Ricardo Lopes – Science & Education, 2007
The law of inertia is a problem in teaching due to the impossibility of showing the proposition experimentally. As we cannot do an experiment to verify the law, we cannot know if it is correct. On the other hand, we know that the science based upon it is successful. A study in the history of mechanics has shown that there are different foundations…
Descriptors: Mechanics (Physics), Motion, Science Instruction, Scientific Principles