This week I only had one student on Friday. She had questions on the homework. It seems like students still do not have good understanding of momentum and impulse. The student had problems understanding the idea of conservation of momentum. One way that I explained it was to say that it was similar to the idea of conservation of energy. This was also helpful because we were able to discuss the differences between inelastic and elastic collisions. In addition, the moment of inertia was a concept that I had difficulty explaining in a conceptual manner. The fact that there are different equations for different shapes confused the student.
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