## Photos from The Physics Classroom's Flickr Group

### Lesson 1: Newton's First Law of Motion

Lesson 1 discusses the concept of inertia and mass and explains the meaning of Newton's first law of motion - the law of inertia. Items in the group's pool include photos of air hockey discs, odd objects in an equilibrium state, drawings of Newton and Galilleo, cartoons, and much more. Photos complement many of the discussions from Lesson 1 of the Newton's Laws chapter of The Physics Classroom Tutorial.

### Lesson 2: Force and Its Representation

Lesson 2 discusses the concept of force, the types of common forces and the use of free-body diagrams to represent the forces acting upon an object. Items in the group's pool include photos of rockets, base jumpers, skydivers, construction cranes, parachutes, boulders, cartoons, and much more. Photos complement many of the discussions from Lesson 2 of the Newton's Laws chapter of The Physics Classroom Tutorial.

### Lesson 3: Newton's Second Law of Motion

Lesson 3 describes thc conceptual and mathematical aspect of Newton's second law. The use of force analyses and free-body diagrams to analyze many physical situations are discussed.Items in the group's pool include cphotos of skydivers, parachutes, falling coffee filters, wind tunnels, billiards, base jumping, rockets baseball pitching, and much more. Photos complement many of the discussions from Lesson 3 of the Newton's Laws chapter of The Physics Classroom Tutorial.

### Lesson 4: Newton's Third Law of Motion

Lesson 4 discusses Newton's third law of motion - the law of action and reaction. Items in the group's pool include photos of rocket engines, rockets, sprinters at the blocks, sketches and statues of Newton, and much more. Photos complement many of the discussions from Lesson 4 of the Newton's Laws chapter of The Physics Classroom Tutorial.