Experience the effect of friction, air resistance, and applied force upon a sledder. The speed, acceleration, and force values are displayed as the sled moves. Learners can vary the mass of the sledder and the size of the parachute...

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.

Students apply Newton's laws to more diverse physical settings where multiple forces from varying origins interact. To aid in condensing the physical setting into mathematical expressions, the free body diagram is used in this module...

Students must determine the force of friction on a car on a turn and the maximum speed the car could navigate a turn.

[Free Registration/Login Required] Learn about kinetic friction and how objects slide to a stop under the influence of friction.

By the end of this section, you will be able to define drag force and model it mathematically, discuss the applications of drag force, define terminal velocity, and perform calculations to find terminal velocity.

A collection of resources on how humans use machines and tools to meet their needs. Covers simple and complex machines, subsystems that transfer forces, mechanical advantage, speed ratio, the effect of friction, efficiency, the science...

This slide show presentation helps the learner understand how normal force affects the amount of friction.

A lesson about friction can be found on this website. Students will experiment to see how motion and frictional force affect the game of football.

Through illustrated examples and interactive practice problems, students find the value of forces acting upon objects using force equations.

Explore the effects of forces around us in the world.

The Thinking Fountain provides this simple experiment for understanding friction and it relationship to energy.

By the end of this section, you will be able to state Hooke's law; explain Hook's law using graphical representations between deformation and applied force; discuss the three types of deformations: changes in length, sideways shear, and...

This lesson will introduce the concept of friction and explain how it can affect forces. It is 2 of 5 in the series titled "Friction."

This lesson will introduce the concept of friction and explain how it can affect forces. It is 3 of 5 in the series titled "Friction."

Covers the meanings of force, friction, and gravity, and the differences between magnetic and elastic spring force, and between weight and mass. The effect of air resistance on an object's motion is also touched upon.

Students must calculate the acceleration of an object being pulled along a horizontal surface by a force on an angle. The surface has friction.

For this lab activity, young scholars will become familiar with Newton's 2nd Law of Motion. By investigating the motion of different skateboarders pulled with a variety of constant force values, they will discover that bodies acted on by...

Create an Atwood's machine and a modified Atwood's machine in this interactive. Change the amount of mass on either object, introduce friction forces, and measure distance and time in order to calculate the acceleration.

This program gives students a visual representation of the forces on a block that is on an inclined plane. The students can watch how force gravity, force normal, and force friction change as the angle of the plane changes. Students can...

In this activity, teams of students build a car out of common materials which is then propelled by the release of air out of a balloon and must travel a minimum distance. The activity is then extended to a competition to build the car...

Learn more about finding acceleration through the practices found in this lesson. "The process of determining the acceleration of an object demands that the mass and the net force are known." Check out this comprehensive site.

A clear explanation of Newton's First Law of Motion, the law of inertia, with diagrams and real-world examples. Useful for both students and teachers. Written by a high school physics teacher.

Explore the world of finding individual forces. "The process of determining the value of the individual forces acting upon an object involve [sic] an application of Newton's Second law and an application of the meaning of the net force."