| 1. |
A ball is dropped
from the edge of the Grand Canyon. How fast is it moving when it has
fallen 19.6 m? Answer
|
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A. |
9.8 m/s |
C. |
29.4 m/s |
|
B. |
19.6 m/s |
D. |
39.2 m/s |
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| 2. |
Which combination of
concurrent forces could produce equilibrium? Answer
|
|
A. |
30. N, 40. N, and 80. N |
C. |
30. N, 30. N, and 70. N |
|
B. |
10. N, 30. N, and 50. N |
D. |
30. N, 30. N, and 50. N |
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| 3. |
A 200. kg instrument
package weighs 300. N on a recently discovered planet. The
acceleration due to gravity on this planet is Answer
|
|
A. |
0.66 m/s2 |
C. |
4.9 m/s2 |
|
B. |
1.5 m/s2 |
D. |
9.8 m/s2 |
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| 4. |
A 35.0 N cat stands
on a spring scale in an airplane. If the scale reads 32.5 N, the
airplane is Answer
|
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A. |
climbing at a constant rate. |
C. |
diving at a constant rate |
|
B. |
climbing while accelerating |
D. |
diving while accelerating |
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| 5. |
While renovating
the Washington Monument recently, a worker simultaneously dropped a ping
pong ball and a baseball. Neglecting air resistance, which of the
following statements best describes the objects the instant before they
hit the ground. Answer
|
|
A. |
The baseball gets
to the ground first and has the greater momentum.
|
|
B. |
They get to the
ground at the same time and have the same momentum.
|
|
C. |
They get to the
ground at the same time and the baseball has the greater momentum.
|
|
D. |
The baseball gets
to the ground first and the ping pong ball has the greater momentum. |
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| 6. |
A 100. kg football
player is running at a constant 5.0 m/s. What is his kinetic
energy? Answer
|
|
A. |
2.5 x 102 J |
C. |
1.3 x 103 J |
|
B. |
5.0 x 102 J |
D. |
2.5x 103 J |
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| 7. |
A force is applied
to a ice skater on a frictionless surface. The energy gained by the
ice skater is equal to the Answer
|
|
A. |
momentum given to the ice
skater. |
C. |
impulse applied to the ice
skater. |
|
B. |
power applied to the ice skater. |
D. |
work done on the ice skater. |
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| 8. |
On a trip from New
York City to Miami, a car on I-95 takes 2.00 h to travel from the 150.
kilometer marker to the 400. kilometer marker in North
Carolina. What is the cars average speed during this part of its
trip? Answer
|
|
A. |
75.0 km/h |
C. |
200. km/h |
|
B. |
125 km/h |
D. |
250. km/h |
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| 9. |
Which pair of
concurrent forces can produce a 15 N resultant force? Answer
|
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A. |
7.0 N and 7.0 N |
C. |
12 N and 15 N |
|
B. |
5.0 N and 8.0 N |
D. |
15 N and 40. N |
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| 10. |
A 50.0 g golf ball is
hit off a tee. What is the velocity obtained if the impulse was 20.0
N . s? Answer
|
|
A. |
2.50 m/s |
C. |
400. m/s |
|
B. |
200. m/s |
D. |
1.00 x 103 m/s |
