Kinematics 101 - Motion in 1 dimension

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Learn about graphing and building equations for 1 D motions

1,470 students enrolled

What Will I Learn?

- Understand concepts of speed, velocity, acceleration, free fall
- Solve problems based on free fall and 1D
- It will also allow you to get the right intuition behind the link between forces and motion when you study about them

Requirements

- I expect you to have some knowledge about algebra and equations.
- For example you should understand what this equation "y=2x+3" means.
- It would be great if you have some experience in graphing, but even if you don't, I cover graphs from the most basic form

Description

This course is all about Kinematics in 1D, the physics of moving things along a straight line. Kinematics is always the first topic you would have to master in order to understand the laws of the universe.

Everything in the universe is moving, so kinematics is the most fundamental thing you will need to know to do any kind of physics.

I expect no prior knowledge of physics, in order for you to take this course. The only pre requisites are little bit of math (mentioned in the course basics). Although kinematics needs calculus, I will be teaching everything calculus that we will be needed to tackle various scenarios. So don't worry about calculus :)

The course is structured as follows

Concept videos, Practice problem videos, Extra information (Which is not mandatory but helps you get more insight and get more out of the course :))

For every concept, I have included trivial and challenging quizzes to make sure, you can check your understanding and review any material if needed.

So what are you waiting for, enroll for Kinematics 101 and let's get.. wait for it... moving! ;-)

Who is the target audience?

- This course is meant for
- a) People taking any other courses in physics. Kinematics is the basics of all of physics.
- b) Anyone who has never taken a physics course. Kinematics is always the first topic to learn in physics
- c) Anyone aiming for AP physics exam, or equivalently NEET, JEE exams (although this course only covers the basics of it)

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Curriculum For This Course

30 Lectures

02:50:47
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Welcome To Kinematics101
1 Lecture
04:29

Hello, I am extremely excited to be starting my first course on Mechanics. Kinematics 101. In this course, This course is all about straight line motion or 1 dimensional motion. In this introductory video, I tell you who I am, and what I will be offering for you.

What pre-requisites you need to have (with examples) and why you should take this course, and the most important thing

This Course is 100 percent free of cost. For-ever.

Hi, Welcome to Kinematics 101

04:29

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Bob at rest
2 Lectures
11:16

We look at the simplest situation that you can find in kinematics. A particle at rest. We begin by placing an axis and building our very first kinematics equation :)

Bob at rest (building equation for particle at rest)

04:28

Let us check your understanding about positions and origin

Review Quiz - Bob at rest Part 1

4 questions

We continue with Bob at rest, and here, we build a graph for the same situation. Graphing is an important part of kinematics, and if you have no experience in graphing what so ever, don't worry, I give you an intuitive example of graphing :)

Bob at rest(building Graph for particle at rest)

06:48

Let us see, if you have understood graphing :)

Review Quiz - Bob at Rest (Graphing)

6 questions

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Bob in Uniform motion
12 Lectures
01:04:29

Let us start with some real kinematics now. Bob is now in motion. A special kind of motion, called the Uniform motion. Can you figure out what is so uniform?

Check out this "uniform Motion" - What is so "Uniform" ?

02:01

If you couldn't figure it out, I make a small diagram, showing the 'snapshots' of bob at various time instants. Let us write down the changes in position for some time intervals. Can you see there is some sort of trend?

Looking at 'Uniform' Motion in a little bit detail

02:47

What trend do you notice in the above 'uniform motion'?

Notice the trend?

3 questions

I will introduce you to the one of the quantities that you will keep hearing in physics over and over again. It is called the 'average velocity'. By the end of this section, you will understand what average velocity means (at least mathematically)

Introducing Average Velocity

04:19

We define Displacement as change in position, which is calculated as final position minus the initial position.

We define Average velocity as the displacement per unit time. Lets put these definitions to the test shall we?

Quiz on Displacement and Average Velocity

5 questions

Okay, now time to build the equation for this Uniform motion. Our first equation for moving things. Are you excited already? :)

Building equation for Uniform Motion

02:30

Let us see if you understood the position function for a uniform motion

Position Function Quiz

4 questions

Now, we will start graphing Uniform motion. Again I do it intuitively, without expecting any prior knowledge of graphs. After this example, you will understand perfectly, what graphs mean.

Graphing Uniform motion

05:09

A review quiz about graphing Uniform motion

Graphing Uniform motion

4 questions

A radical Concept, Velocity AT a moment in time?

04:11

Instant velocity is a brand new concept. Let's do some review before we continue shall we?

Instantaneous velocity review

2 questions

Understanding Instantaneous Velocity

06:35

Lets see if you have understood the concept of instant velocity

Instantaneous velocity More reivew

3 questions

We have seen position time graphs before. But now that we have understanding of velocity, it's time to introduce concept of slope which is a powerful tool in graphical analysis.

Concept of Slope

10:53

Now that slopes are introduced, lets make sure your concepts become concrete before we move forward okay?

Quiz on Slope concept

9 questions

Let me show you, how, by using the concept of slope, we can do a great deal of qualitative analysis of understanding motion using xt graphs

Qualitative analysis of motion using xt graphs

05:53

Let's strengthen your concept of graph further shall we?

Qualitative analysis on graphs

6 questions

Since we now know, what velocity is, it's time to introduce yet another kind of graph which helps us understand motion. Velocity time graph

VT graphs

08:31

Let's check your understanding of VT graphs so far

Review quiz on VT graphs

7 questions

You can calculate displacement using a vt graph :)

Area under the vt graph

04:24

Lets do some review quiz on area under vt graph concept shall we?

Review on Area under VT graph

7 questions

Lets connect the dots. (No implied puns) We will now convert from xt graphs to vt graphs to further deepen our understanding of graphical motion

xt to vt

07:16

It's time to test your skills on graphical analysis. Let's see if you understand motion enough to convert from xt graphs to vt graphs and vice versa

Review Quiz on Conversion from xt to vt and vice versa

4 questions

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Bob in Non uniform motion
5 Lectures
28:48

Finally I will talk about the most common aspect of motion. Speed. Isn't it the same as velocity? Not really. To understand the difference, it's best to take an example of a non-uniform motion. So lets begin

How fast?

04:14

Try to fill up the data in the table by looking at Bob's data

00:13

Let's see the concept of average speed in detail and contrast it with average velocity.

Understanding Speed

10:50

Let's make a quick check whether you have understood the idea of average speed shall we?

Review Quiz for Average Speed

6 questions

Just like how we discussed Instantaneous velocity, we use the same concept to understand instantaneous speed and we will compare both and see similarities and differences

Instantaneous Speed

05:39

Have you understood instant speed? Let's see

Review Quiz for Instant Speed

4 questions

This is an optional video. This video just discusses, why, whenever we take a finite time interval and calculate speed or velocity, it becomes the average value. I take some day to day life examples to make you understand this. Ofcourse, if you already know why, you could skip this and go ahead.

Bonus - 1- Why is it called Average?

07:52

Quiz on average values, lets see if you have understood the content (Optional)

Review on Bonus content (Optional)

4 questions

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Practice Problems and Assignment
4 Lectures
28:23

We are going to be solving two elaborate problems (Covering all the concepts that we have dealt with so far) in two problems. This is the first one!

Practice Problem 1 (Calculating Average speed for Entire Journey)

10:20

Practice Problem -2 part 1

11:07

Practice Problem -2 Part2

06:54

Assignment 1

00:02

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The most important characteristic of motion! - ACCELERATION
6 Lectures
33:21

Let us consider a race between two vehicles, a sports car and a sports truck. Hold on, don't jump to conclusions yet. There is a small twist. We will make both vehicles equally fast ;-)

Lets have a race (Who will win?)

01:56

Who do you think will win the race?

Who do you think will win?

1 question

This small section, will discuss the winner of the race, and a small animation to visualize the concept. We are building up towards the notion of acceleration

And the winner will be... "drum rolls"

01:49

What did you see in this video?

What happened?

1 question

Now, that we have some intuition behind, what acceleration is, let's define it and understand it better shall we?

What is acceleration?

09:01

Let's test your understanding about acceleration shall we?

Quiz on accelerations

10 questions

What many beginners in physics get wrong is this. The direction of acceleration. Since acceleration is a common word, we often tend to confuse it with velocity. So here lets see how to get the direction of acceleration intuitively.

Direction of acceleration (Tricky part)

08:06

More quiz on direction of acceleration

More quiz on direction of acceleration

2 questions

Lets check our understanding of direction of acceleration shall we? Let us take more examples to see that we really have understood acceleration directions

Examples on direction of acceleration (Qualitative)

07:47

This quiz will check if you could grasp the direction of acceleration.

Quiz on direction of acceleration

4 questions

This is a bonus section, meaning not really a new concept. But I highly recommend it, if you are a beginner. I distinguish between 'velocity' and 'change in velocity'. These two are not the same things ever. And it is super important to understand this stuff to really get a grasp of accelerations

Bonus - 2 - Acceleration does not depend upon velocity

04:42

About the Instructor