Download Conceptual Physics first Semester Review #1

Conceptual Physics first Semester Review #1
1. Which of these measurements has a magnitude and direction? (4B L1)
a)
b)
c)
d)
mass
volume
speed
velocity
2. Which pair of graphs represents the same motion? (4A L2)
a)
b)
c)
d)
3. Which statement best describes a hypothesis? (2B L1)
a)
b)
c)
d)
A hypothesis cannot be proved wrong.
A hypothesis is a scientific theory.
A hypothesis must be testable.
A hypothesis can never change.
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4. Which would hit the ground first, a feather or a metal bolt, if dropped from the same
height in a vacuum?
A. the feather
B. the metal bolt
C. They would hit the ground at the same time.
D.
They would be suspended in a vacuum.
5. A student walks 160 m in 150 s. The student stops for 30 s and then walks 210 m
farther in 140 s. What is the average speed of the entire walk?
A.
B.
C.
D.
0.53 m/s
0.80 m/s
1.2 m/s
1.3 m/s
6. What instrument is used to measure force?
a.
b.
c.
d.
balance
graduated cylinder
meter stick
spring scale
7. An airplane went form 120 m/s to 180 m/s in 4.0 seconds. What was its acceleration?
A.
B.
C.
D.
15 m/s2
30 m/s2
45 m/s2
60. m/s2
8. A car traveling on a straight road at 15.0 m/s accelerates uniformly to a speed of 21.0
m/s in 12.0seconds. The total distance traveled by the car in this 12.0 second time interval
is
A. 36.0m
B. 180.m
C. 216m
D. 252m
9. Who used three laws to explain the way objects move?
a.
b.
c.
d.
Galileo
Newton
Bohr
Einstein
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10. If the car turns the corner at a constant speed, how do we know that there is force
acting on the car?
a. because the car is motion
b. because the car is moving in a curved path
c. because the car is on the right side of the road
11. Which would hit the ground first, a feather or a metal bolt, if dropped from the same
height in a vacuum?
E.
F.
G.
D.
the feather
the metal bolt
They would hit the ground at the same time.
They would be suspended in a vacuum.
12. Which position vs. time graph indicates an object is at rest.
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13.
In the graph above, what does the slope of the line represent?
A. displacement
B. average velocity
C. acceleration
D. distance
14. Displacement is a
A. scalar
B. vector
C. distance
D. force
15. A tile falls freely from rest from the roof of a building. What is the total distance the
tile falls in the first second?
A. 19.6m
B. 9.8m
C. 4.9m
D. 2.5m
16. These values were obtained as the mass of a bar of metal: 8.83 g; 8.84 g; 8.82 g. The
known mass is 10.68 g. The values are:
A. accurate
B. precise
C. both accurate and precise
D. neither accurate nor precise
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17. What does inertia depend on?
a.
b.
c.
d.
Acceleration
Mass
Force
distance
18. How are the mass and the acceleration of any object related to each other?
a. inversely proportional
b. directly proportional
c. mass = acceleration2
d. acceleration = mass2
19. A man pushes on a wall out of frustration with a force of 30 Newtons. What force
does the wall exert on the man?
a. 60 N
b. 30 N
c. 15 N
d. 0 N
20. Rocket propulsion can be explained by Newton’s ______ law of motion.
a. First
b. Second
c. Third
21.
22. A 2 kg ball is rolled at an initial velocity of 15 m/s. If it takes the ball 10 seconds to
come to a stop, what is the magnitude of the net force?
a.
b.
c.
d.
2N
3N
5N
15N
5
89 N
49 N
23. A rubber ball weighs 49N. It is thrown upward with a force of 89 N. What is the
acceleration of the ball?
a.
b.
c.
d.
30 m/s2
5 m/s2
8 m/s2
4 m/s2
24. If the Moon were positioned twice as far from the Earth as it is now, the gravitational
attraction would be
a. twice as great.
b. four times as great.
c. one-fourth as great.
d. the same as it is now.
25. The gravitational force between two objects would______ if the mass of one of the
objects were suddenly to become two times greater.
a. double
b. quadruple
c. decrease by a factor of 16
d. increase by a factor of 16
26. The gravitational force between two objects would______ if the distance between the
two objects were suddenly to become four times greater.
a. double
b. quadruple
c. decrease by a factor of 16
d. increase by a factor of 16
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27.
28. Work changes the _______ of a system.
a.
b.
c.
d.
mass
energy
force
acceleration
29. A force is applied to a 10 kg ball and its velocity changes from 3 m/s to 8 m/s. How
much work was done on the ball?
a.
b.
c.
d.
30 J
50 J
140 J
275J
30.
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