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: Start: How Do Computers Simulate the Motion of Virtual Particles?
In this lesson we'll explore how we use fairly simple physics to draw particles which move according to the forces we feel in the real world (such as wind & gravity).
Khan Academy
Khan Academy: Newton's Second Law Review
Review the key concepts, equations, and skills for Newton's second law of motion, including how to analyze motion in the x- and y-directions independently.
Khan Academy
Khan Academy: Inelastic Collision Review
Review the key concepts and skills for inelastic collisions. Understand how to determine if a collision is elastic or inelastic.
Khan Academy
Khan Academy: Conservation of Angular Momentum Review
Review how angular momentum is conserved if there is no external torque applied to a system. Specific scenarios are highlighted: system changing it rotational inertia, orbiting bodies, and rotational collisions.
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.
Cosmo Learning
Cosmo Learning: Momentum & Collisions
Review momentum and collisions with this collection of video lectures from East Los Angeles College. Lectures vary in length and explain the concepts with examples.
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.
Concord Consortium
The Concord Consortium: Molecular Workbench: Newton's Cradle
Adjust the mass of one of the balls to see how the other objects are affected in the animated Newton's Cradle.
Sophia Learning
Sophia: Gravitational Force & Newton's Second Law of Motion
This lesson explains how gravitational force is related to free fall, acceleration due to gravity, and Newton's second law of motion.
Sophia Learning
Sophia: Mass & Acceleration: Lesson 1
This lesson explains why mass and acceleration are inversely proportional. It is 1 of 2 in the series titled "Mass & Acceleration."
Sophia Learning
Sophia: Newton's Second Law: Lesson 2
This lesson introduces Newton's Second Law and explains that force is equal to mass times acceleration. It is 2 of 3 in the series titled "Newton's Second Law."
Sophia Learning
Sophia: Newton's Second Law: Lesson 1
This lesson introduces Newton's Second Law and explains that force is equal to mass times acceleration. It is 1 of 3 in the series titled "Newton's Second Law."
Sophia Learning
Sophia: Newton's Second Law of Motion: Lesson 2
This lesson introduces Newton's second law of motion. It is 2 of 3 in the series titled "Newton's Second Law of Motion."
Sophia Learning
Sophia: Representing Forces on an Inclined Plane: Lesson 2
This lesson demonstrates how to draw free-body diagrams for objects at rest or sliding on an inclined plane. It is 2 of 2 in the series titled "Representing Forces on an Inclined Plane."
Sophia Learning
Sophia: Inelastic Collisions
This lesson introduces the concept of inelastic collisions.
Sophia Learning
Sophia: Newton's Second Law of Motion & Free Fall: Lesson 1
This lesson explains how Newton's second law of motion can be used to understand free fall. It is 1 of 2 in the series titled "Newton's Second Law of Motion & Free Fall."
Sophia Learning
Sophia: Practice W/ Newton's Second Law of Motion
This lesson provides the learner with example problems using Newton's second law of motion.
Physics4kids
Physics4 kids.com: Newton's Laws of Motion
Get a brief overview of Newton's three laws of motion. Examples with diagrams are used to explain each law. An online quiz is available to test your understanding of these topics.
CK-12 Foundation
Ck 12: Phys. Science: Calculating Acceleration From Velocity and Time
[Free Registration/Login may be required to access all resource tools.] How to calculate average acceleration and the SI unit for acceleration.
Other
Focus Physical Review: Friction of Molecules
This is an article published by the American Physical Society on friction in microscopic gears that results from the adhesion of molecules. A great exploration of this new obstacle in science.
Michigan Reach Out
Nasa: Soda Pop Can Hero Engine
Students explore all three parts of Newton's Laws of Motion by observing a spinning pop can.
Walter Fendt
Walter Fendt: Newton's Second Law Experiment
A short interactive activity to do an experiment using Newton's Second Law of Motion.
Science Struck
Science Struck: A Brief Overview of Newton's Laws of Motion
Presents labeled illustrations modeling each of Newton's three laws of motion along with explanations.