Students' conceptual knowledge of energy and momentum

TL;DR

This study assesses introductory physics students' understanding of energy and momentum through a test and interviews, revealing widespread difficulties in interpreting and applying these concepts.

Contribution

It introduces a 25-item multiple choice test and interview methodology to evaluate student understanding of energy and momentum in physics.

Findings

Students struggle with qualitative interpretation of energy and momentum principles.

Many students have difficulty applying concepts in physical situations.

The test reveals common misconceptions and gaps in understanding.

Abstract

We investigate student understanding of energy and momentum concepts at the level of introductory physics by designing and administering a 25-item multiple choice test and conducting individual interviews. We find that most students have difficulty in qualitatively interpreting basic principles related to energy and momentum and in applying them in physical situations. The test development process and a summary of results are presented.