Mechanics - Vectors

2020-09-22
1 min read
What is $\hat{i}$??

The unit vector in the x direction.

What is $\hat{j}$??

The unit vector in the y direction.

What is the unit vector in the x direction??

$$ \hat{i} $$

What is the unit vector in the y direction??

$$ \hat{j} $$

What is $\begin{matrix}-2 \ 3\end{matrix}$ in unit vector form??

$$ -2\hat{i} + 3 \hat{j} $$

What is $4\hat{i} - 2\hat{j}$ in column vector form??

$$ \begin{matrix}4 \ -2\end{matrix} $$

What is the magnitude of displacement??

Distance.

What is the magnitude of velocity??

Speed.

What does $|v|$ mean??

The magnitude of $v$.

What is the notation for the magnitude of $v$??

$$ |v| $$

Given two displacement vectors $a$ and $b$, how can you find their total distance??

$$ |a + b| $$


Metadata
date: 2020-09-22 18:29
tags:
- '@?public'
- '@?year-1'
- '@?mechanics'
- '@?school'
title: Mechanics - Vectors