Writing a Vector

Last post we looked at what a vector looks like, and why we need them. Now we're going to finally learn what a vector really is.

Let's take a look at the vector we saw in our last post:



The angle of this vector is 30 degrees, and the magnitude (length) of the vector is 2.

Vector Stuff Everyone but you Knows

This is what a vector looks like:
It's shown as an arrow, which has two properties:

1. It has a magnitude (it's length, 2 Newtons)
2. It has a direction (it's angle, 30 degrees)
   

A vector is not a number. A number has only one property, which is it's value. What is a vector? Whatever you just though was WRONG.

A VECTOR IS BASICALLY A LIST OF NUMBERS.

I know what you're thinking: "I thought you said a vector was an arrow". I DIDN'T SAY THAT. A vector is just usually represented as an arrow, because it's easier for humans to understand and work with.







But all of these three representations mean the same thing.

Alright, you'll probably mess this up. This involves a little trigonometry. Remember this:

and

, or , or

You Wish you were as Smart as Me

I'm starting this blog because kids don't know their physics shit. That's right, you don't know shit about physics. I do know shit about physics and I'm going to tell you. I'm going to tell you:

• Mechanics shit (angular and linear)
• Vector shit
  
• Gravitation shit
  
• Electromagnetism shit
  
• Thermodynamics shit
  
• Wave shit
  
• Oscillations/Simple Harmonic Motion shit
  
• Energy and Momentum shit (including angular momentum)

And lots of other shit too. Ask me shit. I'll answer.