eBook
New York University

Nyu: Math Mol: Motion of Molecules

For Students 9th - 10th
Examine the link between molecular motion and energy. Observe the movement of a molecule at room temperature. Learn about the different types of molecular motion.
eBook
Physics Classroom

The Physics Classroom: Work, Energy, and Power: Internal vs. External Forces

For Students 9th - 10th
Through illustrated examples and interactive examples, students learn about the two categories of forces are referred to as internal forces and external forces.