Vectors

A vector includes ______ and ________.

• direction, magnitude

• magnitude, units

• direction, units

• scalars, scalars

A resultant vector is

• equal to the sum of one vector.

• equal to the sum of two or more vectors.

• equal to the difference of one vector.

How should you add two vectors? (Select all that apply!!!!)

• Add them head to tail

• Add them tail to tail

• Don't bother, why bother

• Use the parallelogram method

• Add them head to head

• (-2, 8)

• (-2, 0)

• (6, 8)

• (6, 0)

• 13
• 10.91
• 7
• 17

• 5

• 7

• 3

• 4

• (-3, -4)

• (-3, 4)

• (3, -4)

• (3, 4)

Find the position vector of the vector PQ, given initial point P ( 5, -3 ) and terminal point Q ( -8, 10 ).

• (-13,13)

• (13,-13)

• (-3,13)

• (3,-13)

Find the dot product of the vectors (3, -2) and (4, 5).

• 2

• 23

• 22

• 7

Calculate the angle between the vectors (2, 2) and (0, 3).

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees