# Ch 7: AP Physics 1: Motion

Watch online video lessons on circular motion and gravity and learn about centripetal force, Newton's law of gravity, torque, and more. These lessons utilize fun graphics and animations to bring these concepts to life.

## AP Physics 1: Motion - Chapter Summary and Learning Objectives

While you probably know that Earth orbits the sun and that the mass of the Earth creates a force called gravity, you may not know the physics behind these facts. In this chapter, you'll learn about uniform circular motion, which is when an object follows a circular path. You'll learn various formulas you need to calculate variables involved with this type of motion. Through the work of Isaac Newton, you'll look at the gravitational pull of the Earth and learn how this type of attraction works on large and small scales. This chapter is designed to teach you:

• Formulas to calculate circular motion
• The forces involved in circular motion
• Gravitational attraction calculations
• Importance of the gravitational constant

VideoObjective
Uniform Circular Motion: Definition and MathematicsUnderstand the movement of an object along the circumference of a circle and the related calculations.
The Centripetal Force Requirement: Definition, Examples, & ProblemsTake a look at this force that makes a body follow a curved path.
Newton's Law of Gravitation: Definition and ApplicationLearn about Newton's famous discovery about the relationship of mass and force.
Gravitational Attraction and Extended BodySee how gravitational attraction works and what changes when multiple parts are involved.
Cavendish and the Value of G: Gravity Experiment and SignificanceExplore how Cavendish sought to weigh the Earth and his measurement of the gravitational constant (G).

Final Exam
Chapter Exam

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