# Ch 3: Kinematics

### About This Chapter

## Kinematics - Chapter Summary and Learning Objectives

Kinematics is the study of the motion of objects, and you'll be introduced to several key kinematics concepts in this chapter. Instructors teach you how to solve two-step accelerated motion problems, represent kinematics with graphs and use different diagrams to analyze the motion of objects. You'll study graphs of motion, free fall physics, projectile motion and uniform circular motion. At the end of this chapter, you'll be familiar with:

- Differences between vectors and scalars
- Methods for finding an object's position
- Ways to determine acceleration from the slope of a velocity or a time graph
- Qualitative descriptions of motion depicted in graphs
- Formula for acceleration of gravity
- Use of equations to describe and represent the motion of objects

Video | Objectives |
---|---|

What is Kinematics? - Studying the Motion of Objects | Define kinematics and explain its uses and limitations. |

Scalars and Vectors: Definition and Difference | Distinguish between vector qualities and scalar qualities. |

What is Position in Physics? - Definition and Examples | Describe how to find an object's position at any moment in time. |

Distance and Displacement in Physics: Definition and Examples | Differentiate between distance and displacement. |

Speed and Velocity: Difference and Examples | Describe the differences between these two concepts and explain how each is calculated. |

Acceleration: Definition, Equation and Examples | Describe acceleration as a vector quality. |

Uniformly-Accelerated Motion and the Big Five Kinematics Equations | Explain how to solve combined position, displacement, acceleration and velocity problems using the big five equations. |

Representing Kinematics with Graphs | Describe how graphs are used to visualize kinematics. |

Ticker Tape Diagrams: Analyzing Motion and Acceleration | Explain how ticker tape diagrams are used to analyze the motion of objects. |

What are Vector Diagrams? - Definition and Uses | Define vector diagrams and explain how they are used in physics. |

Using Position vs. Time Graphs to Describe Motion | Explain methods for setting up a position vs. time graph and how it can be used to describe motion of an object. |

Determining Slope for Position vs. Time Graphs | Determine slope of a line on a position vs. time graph and use it to calculate velocity of a moving object. |

Using Velocity vs. Time Graphs to Describe Motion | Describe the motion of an object using the shape of the line on a velocity vs. time graph. |

Determining Acceleration Using the Slope of a Velocity vs. Time Graph | Calculate an object's acceleration using a velocity vs. time graph. |

Velocity vs. Time: Determining Displacement of an Object | Calculate the displacement of an object moving in a straight line using a velocity vs. time graph. |

Understanding Graphs of Motion: Giving Qualitative Descriptions | Describe shapes of position vs. time graphs and the conclusions that can be drawn from different shapes. |

Free Fall Physics Practice Problems | Calculate height, speed or time of flight using free-falling objects. |

Graphing Free Fall Motion: Showing Acceleration | Represent motion of free-falling objects using graphs. |

The Acceleration of Gravity: Definition & Formula | Determine the formula for acceleration due to gravity. |

Projectile Motion: Definition and Examples | Define this concept and learn the factors needed to solve projectile motion problems. |

Projectile Motion Practice Problems | Solve projectile motion problems. |

Kinematic Equations List: Calculating Motion | Discuss the use of equations to describe and represent the motion of objects. |

Uniform Circular Motion: Definition & Mathematics | Explain the acceleration of an object moving in a circle at constant speed. |

### 1. What is Kinematics? - Studying the Motion of Objects

Kinematics is the study of the motion of objects. Kinematics can tell you a lot about motion, but not everything. In this lesson, we will examine the types of questions kinematics can and cannot answer.

### 2. Scalars and Vectors: Definition and Difference

In this lesson, we will examine scalars and vectors, learn why it is important to know the difference between the two and why remembering to add a direction to many of your exam answers could be the reason you get it right or wrong.

### 3. What is Position in Physics? - Definition & Examples

After watching this video, you will be able to explain what position is, why it is a vector, and interpret position-time graphs. A short quiz will follow.

### 4. Distance and Displacement in Physics: Definition and Examples

Distance and displacement might seem like similar terms but in physics, understanding the difference can mean getting a question right instead of wrong. In this lesson, we will define these terms and illustrate how easy it is to confuse the two.

### 5. Speed and Velocity: Difference and Examples

Is it possible to drive with a speed of 100 mph but a velocity of 0? In this lesson, we will examine the difference between speed and velocity and use that information to answer this question.

### 6. Acceleration: Definition, Equation and Examples

Acceleration can be a tricky topic for many students who tend to get hung up on an object's speed. In this lesson, we will explore the common aspects of acceleration and why speed is not always important.

### 7. Uniformly-Accelerated Motion and the Big Five Kinematics Equations

In this lesson, we will begin to solve problems that combine position, displacement, velocity, and acceleration. I will introduce the Big Five Equations to help you on your way.

### 8. Representing Kinematics with Graphs

In this lesson, we will introduce how to use graphs to visually represent kinematics. For some students, graphing these types of problems is easier than using algebra equations.

### 9. Ticker Tape Diagrams: Analyzing Motion and Acceleration

After watching this video, you will be able to explain what a ticker tape diagram is and analyze motion using a ticker tape diagram. A short quiz will follow.

### 10. What are Vector Diagrams? - Definition and Uses

After watching this video, you will be able to explain what vector diagrams are and how they are used, including vector addition and subtraction. A short quiz will follow.

### 11. Using Position vs. Time Graphs to Describe Motion

Describing motion with graphs can be a simple, yet powerful tool in your physics arsenal. In this lesson, we begin by looking at the basic position vs. time graph.

### 12. Determining Slope for Position vs. Time Graphs

Simply looking at a position vs. time graph can tell you a lot about straight line motion, but doing a few basic calculations can tell you even more. In this lesson, we will learn how to use the slope of the line to determine average velocity.

### 13. Using Velocity vs. Time Graphs to Describe Motion

In this lesson, we will look at an example of a velocity vs. time graph. By examining the shape of the graph, it is possible to accurately describe the motion of an object, even if that motion is very complex.

### 14. Determining Acceleration Using the Slope of a Velocity vs. Time Graph

In this lesson, we will learn how to use the slope of the line on a velocity vs. time graph to calculate the acceleration of an object in straight line motion.

### 15. Velocity vs. Time: Determining Displacement of an Object

There is a lot of information you can determine by looking at a velocity vs. time graph. In this lesson, we will use a little geometry to calculate the displacement of the object represented by the graph.

### 16. Understanding Graphs of Motion: Giving Qualitative Descriptions

You can just look at graphs of straight line motion and accurately describe how that object is moving. In this lesson, we will investigate the basic shapes the graphs can take and what conclusions you can draw from these shapes.

### 17. Free Fall Physics Practice Problems

In this lesson, we will dive into doing calculations involving free falling objects. We will begin with a few helpful tips to get started before working through a couple of example problems.

### 18. Graphing Free Fall Motion: Showing Acceleration

Kinematics topics are great for using x, y scatter graphs to visualize motion. In this lesson, we will examine the basic shapes of two different types of graphs of an object in free fall.

### 19. The Acceleration of Gravity: Definition & Formula

In this lesson, we will introduce the acceleration due to gravity. Objects in free fall are one of the few real world examples of straight line motion with constant acceleration, so they are commonly used when learning kinematics.

### 20. Projectile Motion: Definition and Examples

A projectile is any object that is given an initial velocity and then follows a path determined entirely by gravity. In this lesson, we will introduce projectile motion and touch on a few key facts to keep in mind when working through these problems.

### 21. Projectile Motion Practice Problems

After watching this video lesson, you will know how to use the sets of equations that are used to solve projectile motion problems. Learn how to manipulate them to find the answer you need.

### 22. Kinematic Equations List: Calculating Motion

After watching this video, you will be able to explain what kinematics is, list the five most important kinematics equations, and use them to solve problems. A short quiz will follow.

### 23. Uniform Circular Motion: Definition & Mathematics

After watching this lesson, you will be able to explain what uniform circular motion is, in terms of both acceleration and forces. You will also be able to use equations for centripetal force and acceleration to solve problems. A short quiz will follow.

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### Other Chapters

Other chapters within the UExcel Physics: Study Guide & Test Prep course

- Introduction to Physics
- Vectors
- Force and the Laws of Motion
- Work and Energy in Physics
- Linear Momentum in Physics
- Rotational Motion
- Equilibrium and Elasticity
- Waves, Sound, and Light
- Fluids in Physics
- Thermodynamics in Physics
- Electrostatics
- Circuits in Physics
- The Physics of Magnetism
- Wave Optics
- Relativity
- Modern Physics & Nuclear Physics
- UExcel Physics Flashcards