Sophia Learning
Sophia: Introduction to Tension: Lesson 1
This lesson introduces the concept of tension. It is 1 of 2 in the series titled "Introduction to Tension."
Sophia Learning
Sophia: Normal Force & Acceleration: Lesson 1
This lesson explains what the acceleration of an object experiencing a normal force is. It is 1 of 2 in the series titled "Normal Force & Acceleration."
Khan Academy
Khan Academy: What Is Weight?
This article on weight will help you prepare for the AP Physics test. Included are example problems to help you practice.
Walter Fendt
Walter Fendt: Apps Zur Physik
This site, in German, offers numerous apps that illustrate common physics principles. Apps are organized into categories: mechanics, oscillations and waves, electrodynamics, optics, thermodynamics, the theory of relativity, physics of...
Sophia Learning
Sophia: Introduction to a System: Lesson 1
This lesson introduces the concept a systems and explains why it is important to properly define a system. It is 1 of 2 in the series titled "Introduction to a System."
PBS
Pbs Learning Media: Astronaut Gene Cernan Speaks About Working in Space
In this audio resource from NOVA: "To the Moon," astronaut Gene Cernan recounts his harrowing experience during America's first attempt to do work in outer space.