IGCSEMathsEdexcelMaths BFlashcardsVectors & Transformation GeometryVectors

Vectors (Edexcel IGCSE Maths B): Flashcards

Exam code: 4MB1

1/7

0Still learning

Know0

FrontPosition & Displacement Vectors
True or False?
$\vec{A B} = \vec{O A} - \vec{O B}$

Was this flashcard helpful?

Cards in this collection (7)

True or False?
$\vec{A B} = \vec{O A} - \vec{O B}$
False.
$\vec{A B} \neq \vec{O A} - \vec{O B}$
The correct equation is $\vec{A B} = \vec{O B} - \vec{O A}$ .
True or False?
$\vec{A B} + \vec{B C} = \vec{A C}$
True.
$\vec{A B} + \vec{B C} = \vec{A C}$
This means if you start at A then go to B and then go to C, this is the same vector as starting at A and going to C.
How else could you write the vector $- \vec{A B}$ ?
The vector $- \vec{A B}$ can also be written as $\vec{B A}$ .
True or False?
If two vectors are parallel, then they are scalar multiples.
True.
If two vectors are parallel, then they are scalar multiples.
E.g. the vectors $3 a$ and $12 a$ are parallel.
True or False?
If the point P divides the line AB in the ratio 1 : 3, then $\vec{A P} = \frac{1}{3} \vec{A B}$ .
False.
If the point P divides the line AB in the ratio 1 : 3, then $\vec{A P} \neq \frac{1}{3} \vec{A B}$ .
P divides the line into 4 equal parts, with 1 part on one side, and 3 parts on the other side.
The correct equation is $\vec{A P} = \frac{1}{4} \vec{A B}$ .
If the vectors $\vec{A B}$ and $\vec{A C}$ are parallel, what does this tell you about the three points, $A$ , $B$ and $C$ ?
If the vectors $\vec{A B}$ and $\vec{A C}$ are parallel, then the three points $A$ , $B$ and $C$ all lie on the same straight line.
Points A and B have position vectors $a$ and $b$ , respectively.
Write a formula for the position vector of the midpoint of A and B in terms of $a$ and $b$ .
Points A and B have position vectors $a$ and $b$ , respectively.
A formula for the position vector of the midpoint of A and B is $\frac{1}{2} (a + b)$ .

Sign up to unlock flashcards

By signing up you agree to our Terms and Privacy Policy

Previous:Volume & Surface AreaNext:Transformations

More Revision Notes you might like