Investigating the Principle of Relativity and the Principle of Equivalence in classical mechanics: A teaching learning sequence based on experiments and simulations

We present a teaching-learning sequence on relative motion that addresses some fundamental aspects such as the principle of relativity and the principle of equivalence in classical mechanics. To highlight key concepts and motivate students to explore the topic, experimental activities based on video analysis and some interactive simulations were used, which can be modified on the fly by the students. These tools are useful to stimulate autonomous investigation and to support the modelling of different physical situations.