Projectile Motion

Now that we understand 1D motion and 2D motion, let's launch some cannon balls and see what happens. And don't worry, we'll ignore air resistance (see the air resistance lesson to understand why).

In this lesson we'll learn about 1D and 2D projectile motion - the motion of an object moving through the air which is only affected by the force of gravity and nothing else. This includes objects that are thrown straight up, falling straight down, or moving sideways through the air (we call all of these projectiles).

We'll start with an introduction to projectile motion to understand the basics like the acceleration due to gravity, g.

Then we'll learn about the simpler case, 1D projectile motion, where an object only moves in the vertical direction.

After that we'll learn about 2D projectile motion. We can use the trig functions to break down 2D motion into its 1D components: motion in the x direction and motion in the y direction. These two motions are completely independent - they don't affect each other. However, they are happening at the same time, so we can use time as the link between our x motion and y motion equations. It will help to go through the 2D motion and vectors lesson before learning 2D projectile motion.

Introduction to Projectile Motion (9:33)
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What is projectile motion?

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1D vs 2D projectile motion

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Kinematic equations for projectile motion

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Important concepts for projectile motion
1D Projectile Motion (51:46)
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Overview of 1D projectile motion

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Example 1: Object dropped from rest

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Example 2: Object with initial downwards velocity

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Example 3: Object with initial upwards velocity

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Comparing all 3 examples

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Summary
2D Projectile Motion (57:55)
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Overview of 2D projectile motion

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Example 1: initial horizontal velocity

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Example 2: initial velocity at an angle

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Projectile motion range

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2D projectile motion scenarios

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Summary

Introduction to Projectile Motion
V1: Each slide is a single image
V2: Each slide contains all of the individual graphics used in the video so you can edit things


1D Projectile Motion
V1: These include many slides that cover almost all of the transitions/animations in the video


V2: These include fewer slides that show some key points in the video

Study guide for projectile motion, trajectories and the acceleration due to gravity
Study guide for projectile motion kinematic equations and variables
Study guide for finding the components of the initial velocity vector
Study guide for the range equation for projectile motion
Study guide for the motion graphs in projectile motion
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Projectile Motion Example Problems & Tips (45:57)
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Concepts and tips for projectile motion problems

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Problem 1: 1D - final speed

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Problem 2: 1D - initial speed

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Problem 3: 1D - velocity graph

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Problem 4: 2D - angle of final velocity

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Problem 5: 2D - ball over a fence

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Problem 6: 2D - range

1D Projectile Motion
2D Projectile Motion
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Multiple-Choice Questions

AP Physics 1 multiple choice questions (MCQ) for projectile motion

Answers

Answer and solutions for the AP Physics 1 multiple choice questions (MCQ) for projectile motion
Introduction

Now that we understand 1D motion and 2D motion, let's launch some cannon balls and see what happens. And don't worry, we'll ignore air resistance (see the air resistance lesson to understand why).

In this lesson we'll learn about 1D and 2D projectile motion - the motion of an object moving through the air which is only affected by the force of gravity and nothing else. This includes objects that are thrown straight up, falling straight down, or moving sideways through the air (we call all of these projectiles).

We'll start with an introduction to projectile motion to understand the basics like the acceleration due to gravity, g.

Then we'll learn about the simpler case, 1D projectile motion, where an object only moves in the vertical direction.

After that we'll learn about 2D projectile motion. We can use the trig functions to break down 2D motion into its 1D components: motion in the x direction and motion in the y direction. These two motions are completely independent - they don't affect each other. However, they are happening at the same time, so we can use time as the link between our x motion and y motion equations. It will help to go through the 2D motion and vectors lesson before learning 2D projectile motion.

Study Guide

Complete and Continue  
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