A) kilogram B) Newton C) kg-m/sec D) m/sec 1

1. Which of the following is a unit of force?
A) kilogram
C) kg-m/sec
B) Newton
D) m/sec 2
2. The weight of an apple is closest to
A) 10 –2 N
C) 10 2 N
B) 10 0 N
D) 10 4 N
6. As the distance between two objects increases, the
gravitational force of attraction between them will
A) decrease
C) remain the same
B) increase
7. Base your answer to the following question on The
diagram below shows a horizontal 8.0-newton force
applied to a 4.0-kilogram block on a frictionless table.
3. Base your answer to the following question on In the
diagram below, a box is at rest on an inclined plane.
What is the magnitude of the block’s acceleration?
A) 0.50 m/s 2
C) 9.8 m/s 2
Which vector best represents the direction of the normal
force acting on the box?
A) A
B) B
C) C
D) D
B) 2.0 m/s 2
D) 32 m/s 2
8. The graph below represents the relationship between the
forces applied to an object and the corresponding
accelerations produced.
4. Base your answer to the following question on The
diagram below shows a block on a horizontal frictionless
surface. A 100.- newton force acts on the block at an
angle of 30.° above the horizontal.
What is the magnitude of force F if it establishes
equilibrium?
A) 50.0 N
C) 100. N
B) 86.6 N
D) 187 N
5. Which object has the greatest inertia?
A) a 1.0-kilogram object moving at 15 meters per
second
B) a 5.0-kilogram object at rest
C) a 10.-kilogram object moving at 2.0 meters per
second
D) a 15-kilogram object at rest
What is the mass of the object?
A) 1.0 kg
C) 0.50 kg
B) 2.0 kg
D) 1.5 kg
9. A man weighs 900 Newtons standing on a scale in a
stationary elevator. If some time later the reading on the
scale is 1200 Newtons, the elevator must be moving with
A)
B)
C)
D)
constant acceleration downward
constant speed downward
constant acceleration upward
constant speed upward
10. If a 65-kilogram astronaut exerts a force with a
magnitude of 50. newtons on a satellite that she is
repairing, the magnitude of the force that the satellite
exerts on her is
A)
B)
C)
D)
0N
50. N less than her weight
50. N more than her weight
50. N
11. Base your answer to the following question on A
horizontal force is used to pull a 5.0-kilogram cart at a
constant speed of 5.0 meters per second across the
floor, as shown in the diagram below.
If the force of friction between the cart and the floor is
10. Newtons, the magnitude of the horizontal force
along the handle of the cart is
A) 5.0 N B) 10. N C) 25 N
D) 50. N
12. Base your answer to the following question on Two
forces are applied to a 2.0-kilogram block on a
frictionless horizontal surface, as shown in the diagram
below.
The acceleration of the block is
15. A box is pushed toward the right across a classroom
floor. The force of friction on the box is directed
toward the
A) left
C) ceiling
B) right
D) floor
16. Jill is pulling a 200. Newton sled through the snow at
constant velocity using a horizontal force of 10.
Newtons. What is the kinetic coefficient of friction of
the sled on the snow?
A) 0.02
B) 0.05
C) 0.20
17. When a 12-newton horizontal force is applied to a box
on a horizontal tabletop, the box remains at rest. The
force of static friction acting on the box is
A)
B)
C)
D)
0N
between 0 N and 12 N
12 N
greater than 12 N
18. A 1750-kilogram car travels at a constant speed of 15.0
meters per second around a horizontal, circular track
with a radius of 45.0 meters. The magnitude of the
centripetal force acting on the car is
A) 5.00 N
C) 8750 N
B) 583 N
D) 3.94 × 10 5 N
19. A 1.0 × 103-kilogram car travels at a constant speed of
20. meters per second around a horizontal circular
track. Which diagram correctly represents the direction
of the car’s velocity (v) and the direction of the
centripetal force (Fc) acting on the car at one particular
moment?
A)
B)
C)
D)
A) 5.0 m/s 2 to the right B) 5.0 m/s 2 to the left
C) 3.0 m/s 2 to the right D) 3.0 m/s 2 to the left
13. What is the magnitude of the gravitational force
between two 5.0-kilogram masses separated by a
distance of 5.0 meters?
10 0
A) 5.0 ×
N
–11
C) 6.7 × 10
N
B) 3.3 × 10
D) 1.3 × 10
–10
–11
N
N
14. A 60.-kilogram physics student would weigh 1560
newtons on the surface of planet X. What is the
magnitude of the acceleration due to gravity on the
surface of planet X?
A) 0.038 m/s 2
C) 9.8 m/s 2
B) 6.1 m/s 2
D) 26 m/s 2
D) 20

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