BioEd Online
Bio Ed Online: Introduction to Force and Motion
How is the motion of an object affected by forces that act on that object? Can you predict how the motion of an object will be affected by balanced and unbalanced forces? Is there a relationship between force, mass, and acceleration? In...
Other
Bscs: Forces and Motion Content Background Document
In this document, we will try to answer a fundamental question of physical science, "Why do things start to move, slow down, speed up, stop moving or change direction?" In answering these core questions we can develop concepts that can...
Physics Classroom
The Physics Classroom: Mathematics of Satellite Motion
The mathematics associated with the motion of satellites is described. Equations (for period, velocity, acceleration and force) are stated, symbols described, and sample problems solved. Includes five practice problems with solutions and...
Sophia Learning
Sophia: Improperly Defining a System
This presentation explains why a poorly defined system can lead to incorrect answers in physics problems.
Physics Classroom
The Physics Classroom: Free Fall and Air Resistance
This lesson in high school physics on Newton's Second Law of Motion provides a discussion of free fall and air resistance, and answers, "Why do objects which encounter air resistance ultimately reach a terminal velocity?" and "In...