Authored and curated by David P. Stern, this series of web pages, part of "From Stargazers to Starships," describes Newton's three laws of motion and the two concepts on which they are based, force and inertia. The...

This web page, authored and curated by David P. Stern, provides information about Newton's theory of universal gravitation and some discussion of the history of Newton's work on this topic. Featured are a calculation for...

This item is a high school-level assessment to gauge understanding of using diagrams to predict outcomes in systems set to collide. It is intended for use within a unit on the conservation of linear momentum. The...

The Materials Science and Technology Teacher's Workshop (MAST) provides this activity to illustrate the principles of energy transfer. The demonstration uses a balance, matches, soda cans and a firecracker to show how...

This activity was created by Jim and Jane Nelson, and is from the PTRA manual "Role of the Laboratory in Teaching Introductory Physics." It is a life-sized activity for students to investigate the forces and torques...