11. vectors Flashcards

1
Q

what does vectors have

A

magnitude and direction

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2
Q

what do scalar quantities have

A

only magnitude

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3
Q

what do you do to a vector when you multiply by a scale

A

multiply each component

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4
Q

what do you do when you add to a column vector

A

you add to each component

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5
Q

unit vector

A

represent vector in 2 dimensions along x and y axis usually denoted by I and j respectively

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6
Q

column vector is described by

A

a change in position or displacement relative to x and y axis

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7
Q

how to find the magnitude of vector

ex xi + yj

A

I a I = root x^2 + y^2

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8
Q

magnitude direction form

A

when you define by giving its magnitude and the angle between the vector and one of the coordinate axis

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9
Q

position vector are

A

vectors giving position relative to a fixed origin

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10
Q

vector quantities 3

A

velocity
displacement
force

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11
Q

scalar quantties 2

A

speed
distance

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12
Q

distance =

A

speed x time

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