Physics Classroom
The Physics Classroom: Vectors & Projectiles: Vector Addition: Does Order Matter
Watch this short demonstration that focuses on a single question: Does the order in which vectors are added together affect the magnitude or the direction of the resultant?
Physics Classroom
The Physics Classroom: Circular & Satellite Motion: Uniform Circular Motion
Manipulate variables while exploring principles and relationships related to moving in a circle at a constant speed. Students change the radius of the circle, the speed of the object, and the mass of the object and investigate the effect...
Physics Classroom
The Physics Classroom: Newton's Laws: Newton's Second Law
Students begin to explore the meaning of Newton's Second Law of Motion by doing several self-checking practice problems.
Physics Classroom
The Physics Classroom: Newton's Laws: Finding Individual Forces
Through illustrated examples and interactive practice problems, students find the value of forces acting upon objects using force equations.
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...
CK-12 Foundation
Ck 12: Physical Science: Combining Forces
[Free Registration/Login may be required to access all resource tools.] Featurea the definition of combining forces: Pulling down and pushing up, forces acting in opposite directions, forces acting in the same direction.
Khan Academy
Khan Academy: Change in Momentum and Speed From Force vs. Time Graphs
Practice calculating change in momentum and speed from force vs. time graphs using this four-question quiz.
Khan Academy
Khan Academy: What Is Newton's First Law?
Newton's First Law also called the law of inertia is the most important thing to realize about motion. This article offers more information on motion and explains solved problems involving Newton's First Law. Also included is a video...
Khan Academy
Khan Academy: What Is Newton's Second Law?
Learn about the fact that forces cause acceleration in this article about Newton's Second Law. Includes examples and worked examples of problems.
NASA
Nasa: Beginner's Guide to Aerodynamics
This site from NASA uses a colorful graphic to illustrate why objects reach terminal velocity. Provides equation for the terminal velocity of an object. Graphic is accompanied by a simple explanation.
Sophia Learning
Sophia: Net Force in Rope & Pulley Systems: Lesson 2
This lesson demonstrates how to find the net force acting on objects in a rope and pulley system. It is 2 of 2 in the series titled "Net Force in Rope & Pulley Systems."
Sophia Learning
Sophia: Net Force in Rope & Pulley Systems: Lesson 1
This lesson demonstrates how to find the net force acting on objects in a rope and pulley system. It is 1 of 2 in the series titled "Net Force in Rope & Pulley Systems."
Sophia Learning
Sophia: Practice W/ Inclined Planes: Lesson 2
This lesson provides the learner with example problems on determining the net force acting on objects at rest or sliding across inclined planes. It is 2 of 2 in the series titled "Practice w/ Inclined Planes."
Sophia Learning
Sophia: Using Free Body Diagrams: Lesson 2
This lesson demonstrates how to use free-body diagrams to determine the net force acting on an object.
Sophia Learning
Sophia: Calculating Forces: Lesson 4
This lesson will explain how to calculate net forces on an object being pushed or pulled. It is 4 of 4 in the series titled "Calculating Forces."
Sophia Learning
Sophia: Calculating Forces: Lesson 1
This lesson will explain how to calculate net forces on an object being pushed or pulled. It is 1 of 4 in the series titled "Calculating Forces."