Vectors Flashcards
1
Q
State the component of a vector 4i+j in a column vector form.
A
2
Q
What is the magnitude of a vector?
A
It’s the length of the vector.
3
Q
How can the magnitude of a vector be found?
Find the magnitude of a vector 4i+j.
A
Using Pythoagoras’ Theorem.
4
Q
What is a difference between ‘scalar quantity’ and ‘vector quantity’ ?
A
Scalar quantity - just magnitude is needed
Vector quantity - magnitude and direction is needed
5
Q
State the difference between ‘displacement vector’ and ‘position vector’.
A
Displacement vector can start anywhere.
Position vector always starts from the origin.
6
Q
What is the formula for the unit vector?
A
7
Q
What is the formula for velocity?
A
