PRODUÇÃO E UTILIZAÇÃO DE UM APARATO EXPERIMENTAL PARA O ENSINO DE LANÇAMENTO HORIZONTAL, CONSERVAÇÃO DE ENERGIA E CONSERVAÇÃO DO MOMENTO LINEAR PRODUCTION AND USE OF AN EXPERIMENTAL APPARATUS FOR HORIZONTAL LAUNCH TEACHING, ENERGY CONSERVATION AND CONSERVATION OF THE LINEAR MOMENTUM

The teaching of Physics, especially in public schools, suffer from scarcity of resources and experimental teaching materials, which harm the lessons of that science, as the teachers often have to be limited to traditional lectures. It is therefore necessary to search alternative means involving the production of teaching materials at low cost. This paper describes in detail the production of an experimental apparatus for the horizontal launching teaching, energy conservation and conservation of linear momentum, as well as exposes the equations used in the experiments. There are even reports of some successful activities with this instrument in a graduation course in Physics.