Vectors

Which statement describes a vector?

• It has magnitude but no direction
• It has direction but no magnitude
• It has both direction and magnitude
• It has constant magnitude but no
   direction

Find the direction of vector <0, 4>.

• 180⁰
• 90⁰
• 270⁰
• 0⁰

Find the direction of vector <6,5>.

• 219⁰
• 39⁰
• 129⁰
• 309⁰

Find the component form of AB with initial point A(1, -3) and terminal point B(1, 3)

• <2, 0>
• <0, 6>
• 2i
• 6j

If y = <2, 0> and
z = <-1, -4>, find 3y - 2z.

• <5, -8>
• <4, 8>
• <8, 8>
• <-8, -8>

Find the magnitude of AB if the initial point is (-3, 1) and the terminal point is (3, 9).

• 6
• 8.2
• 10
• 10.4

Find the magnitude of the vector <-4, -6>.

• 7.211
• 52
• 3.162
• 4.472

Find the direction of the vector <-2,1>.

• 63⁰
• 333⁰
• 27⁰
• 153⁰

Find the direction of the vector <2, -5>.

• 292⁰
• 68⁰
• 112⁰
• 22⁰

Find the unit vector in the direction of <4, -3>

• <⅘, -⅗>
• <0.57, -0.43>
• <1, -1>
• -¾