Component Form, Magnitude, Direction Angle and Unit Vectors

Find the magnitude.

• 4

• 5

• 3

• square root of 5

Vector is a quantity with:

• magnitude and direction

• magnitude

• direction

• none of the above

• 0 degrees

• 90 degrees

• 180 degrees

• 270 degrees

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

• 63⁰

• 333⁰

• 27⁰

• 153⁰

Find the direction angle and magnitude of the vector <-7, 0>

• magnitude = 7

• magnitude = -7

• 90°

• 180°

• 270°

Which of the following is always positive?

• vector

• scalar

• direction

• magnitude

Given the initial and terminal points, write as a position vector (v in terms of i and j) and find its magnitude.

• v = 3i - 2j

• v = -3i + 2j

• v = -2i + 3j

• v = 2i - 3j

Find the unit vector that has the same direction as the vector v. v = 3i - 4j

• (3/5)i + (4/5)j

• (3/5)i - (4/5)j

• (4/5)i - (3/5)j

• (4/5)i + (3/5)j

Find the unit vector of 〈 3, -6 〉

• A

• B

• C

• D

• E

Determine the vector component if the vector has a magnitude of 14√2 and an angle of 140°

• 〈15.17, 12.73 〉

• 〈-14.15, 11.29 〉

• 〈14.15, 11.29 〉

• 〈-15.17, 12.73 〉