CK-12 Foundation
Ck 12: Acceleration Due to Gravity
[Free Registration/Login may be required to access all resource tools.] In this module, students will explore the concept of gravity, and be able to use it to perform calculations using constant acceleration.
Texas Education Agency
Texas Gateway: Glossary for Forces and Newton's Laws
This is a glossary of terms and definitions used in Chapter 4: Force and Newton's Laws of Motion from the AP Physics online text.
Physics Classroom
The Physics Classroom: Newtons Laws: Free Body Diagram Interactive
A skill-building tool that presents students with twelve situations for which they must construct free-body diagrams. Force arrows allow user to toggle the magnitude of the force. Feedback is immediate; opportunities to correct answers...