Chapter 10- Vectors (Pure Maths) Flashcards

1
Q

what are scalar quantities?

A

scalar quantities have no direction- e.g a speed

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2
Q

what are vector quantities?

A

vector quantities have a direction

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3
Q

how are vector from point a to point b written?

A

–→

AB

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4
Q

what does collinear mean?

A

collinear means they all lie on the same straight line

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5
Q

how does scalar multiplication work?

A

when you multiply a vector by a scalar the direction doesn’t change but the length/magnitude does. All paralell vectors are scalar multiples are each other

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6
Q

what is the i unit vector?

A

i is in the direction of the positive x-axis.

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7
Q

what is the j unit vector?

A

j is in the direction of the positive Y-axis.

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