Exam
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative
that best completes the statement or answers the
question.
1) Vector A has magnitude 8.0 m at an angle of
30 degrees below the +x axis. The
y component of A is
4.0 m.
6.9 m.
-4.0 m.
-6.9 m.
2) If a ball is thrown with a velocity of 25 m/s at
an angle of 37° above the horizontal, what is
the vertical component of the velocity?
15 m/s
12 m/s
25 m/s
19 m/s
3) A butterfly moves with a speed of 12.0 m/s.
The x component of its velocity is 8.00 m/s.
The angle between the direction of its motion
and the x axis must be
48.2°.
53.0°.
41.8°.
30.0°.
4) Two vectors A and B have components (0, 1)
and (-1, 3), respectively. What are the
components of the sum of these two vectors?
(-1, 4)
(1, 2)
(-1, 2)
(1, 4)
1
Answer Key
Testname: PHYSICS
1) C
2) A
3) A
4) A
2