Which of the following vectors
best represents the vector A + B?
(A)
(B)
(C)
(D)
(E)
2.
Vector A has
a magnitude of 5 in the leftward direction and B has
a magnitude of 2 in the rightward direction. What is the value of
2A – B?
(A)
12 in the leftward direction
(B)
10 in the leftward direction
(C)
8 in the leftward direction
(D)
8 in the rightward direction
(E)
12 in the rightward direction
3.
When
the tail of vector A is
set at the origin of the xy-axis, the tip of A reaches
(3,6). When the tail of vector B is
set at the origin of the xy-axis, the tip of B reaches
(–1,5). If the tail of vector A – B were
set at the origin of the xy-axis, what point would
its tip touch?
(A)
(2,11)
(B)
(2,1)
(C)
(–2,7)
(D)
(4,1)
(E)
(4,11)
4.
A and B are
vectors, and is the angle between
them. What can you do to maximize A · B?
I. Maximize the magnitude of A
II. Maximize the magnitude of B
III. Set to 90º
(A)
None of the above
(B)
I only
(C)
III only
(D)
I and II only
(E)
I, II, and III
5.
Which of the following statements
is NOT true about ?
(A)
It is a vector that points into the page
(B)
It has a magnitude that is less than or equal to 12
(C)
It has no component in the plane of the page
(D)
The angle it makes with B is
less than the angle it makes with A
is the angle between
them. What can you do to maximize 
to 90º
?
A
