Intro to Vectors

Which are equivalent vectors?

• u and -u

• u and a

• u and v

• u and b

Write in component form.

• <0, 4>

• <8, 2>

• <2, 8>

• <0, 2>

Given u = <3, 7>, find 2u

• <21, 2>

• <6, 26>

• <6, 14>

• 23

Given u = <3, 7> and v =<-5, 4>, find 2v - 3u

• <21, 2>
• <-19, -13>
• <-15, 3>
• 23

Which statement describes a vector?

• It has magnitude but no direction

• It has direction but no magnitude

• It has both direction and magnitude

• is it me, or are these all the same?

Velocity

• Vector
• Scalar

Mass

• Vector
• Scalar

Volume

• Vector
• Scalar

Force

• Vector
• Scalar

A quantity that has both magnitude and direction is called a scalar quantity.

• True
• False