Which of the following are vector quantities?
Speed
Distance
Time
Velocity
Displacement
Force
Mass
A unit vector has a magnitude of .
The triangle rule is used to add vectors that join ❌. The parallelogram rule is used to add vectors that join ❌.
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 \(\vec{a}= \begin{pmatrix}4\\3\\\end{pmatrix}\), and \(\vec{b}= \begin{pmatrix}1\\-2\\\end{pmatrix}\) calculate the magnitude of \(\vec {AB}\) .
If \(\vec{a}= \begin{pmatrix}2\\3\\\end{pmatrix}\), and \(\vec{b}= \begin{pmatrix}5\\7\\\end{pmatrix}\) calculate the magnitude of \(\vec {AB}\) . \[|\vec{AB}|\]=