# Ch 4: AP Physics 1: Newton's Laws

Watch online video lessons on Newton's laws and learn about inertia, types of forces, air resistance, and more. Self-assessment quizzes accompany each lesson to help you gauge your understanding of these concepts.

## AP Physics 1: Newton's Laws - Chapter Summary and Learning Objectives

Isaac Newton is often considered one of the most influential scientists of all time, and his contributions to physics are part of the field's foundation. In this chapter, you'll learn about Newton's three laws of motion and how they are applied to physics problems. Our instructors have divided this chapter into smaller lessons so you can learn about the laws and their related concepts one at a time. You'll get real examples to explain acceleration, friction, forces, and more. This chapter is designed to teach you:

• What Newton's laws of motion state
• How to determine the force acting on an object
• How to calculate acceleration
• How to identify action-reaction force pairs
• How to draw free-body diagrams

VideoObjective
Newton's First Law of Motion: Examples of the Effect of Force on MotionLearn about uniform motion, or how an object continues to do what it is doing.
Distinguishing Between Inertia and MassUnderstand the effect that an object's mass has on inertia, or the resistance to change.
Mass and Weight: Differences and Calculations Calculate the weight of an object of known mass.
State of Motion and VelocityDescribe how velocity is used to define the state of motion of an object.
Force: Definition and TypesTake a look at what can cause an object to undergo a change and how to categorize these forces.
Forces: Balanced and UnbalancedDissect this term from Newton's first law to understand how a force can change an object's position, momentum, or speed.
Free-Body DiagramsSee how physicists visually represent forces in a system using these diagrams.
Net Force: Definition and Calculations Examine how to determine an object's net force.
Newton's Second Law of Motion: The Relationship Between Force and AccelerationLearn about acceleration and its relationship to the net force acting on an object.
Determining the Acceleration of an ObjectUnderstand how to calculate the acceleration, or increase in velocity, of an object in motion.
Determining the Individual Forces Acting Upon an Object Explore how to decide which types of forces are acting on an object in motion.
Air Resistance and Free FallTake a look at the effect of air resistance on falling objects and what free fall truly means.
Newton's Third Law of Motion: Examples of the Relationship Between Two ForcesLearn how forces occur in opposite and equal pairs, making all forces interactions.
Newton's Laws and Weight, Mass, and GravityUnderstand the relationship between the laws of motion and the parameters of an object.
Identifying Action and Reaction Force PairsExplore ways to figure out which forces are paired together as actions and reactions.
The Normal Force: Definition and ExamplesTake a look at the force that is exerted simply by an object being perpendicular to a surface.
Friction: Definition and TypesSee how elements sliding against each other creates a force that needs to be taken into account.
Inclined Planes in Physics: Definition, Facts, and Examples Understand the forces inherent on an angled plane, including friction and normal force.

Final Exam
Chapter Exam

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