How well do you know your scalar and vectors? This quiz, the final part of our Vector series, tests your knowledge with definitions and equations to be solved. Can you get 100% first time around?
A unit vector has a magnitude of [blank_start]1[blank_end].
Respuesta
1
Pregunta 3
Pregunta
The triangle rule is used to add vectors that join [blank_start]head to tail[blank_end].
The parallelogram rule is used to add vectors that join [blank_start]tail to tail[blank_end].
Respuesta
head to tail
tail to tail
head to head
Pregunta 4
Pregunta
If \(\vec{a}= \begin{pmatrix}5\\8\\\end{pmatrix}\), calculate \(2\vec{a}\).
If \(\vec{a}= \begin{pmatrix}4\\3\\\end{pmatrix}\), and \(\vec{b}= \begin{pmatrix}1\\-2\\\end{pmatrix}\) calculate \(\vec c\) where \(\vec c =\vec{a}-2\vec{b}\)
If \(\vec{a}= \begin{pmatrix}2\\3\\\end{pmatrix}\), and \(\vec{b}= \begin{pmatrix}5\\7\\\end{pmatrix}\) calculate the magnitude of \(\vec {AB}\) .
\[|\vec{AB}|\]=[blank_start]5[blank_end]