Download Wizard Test Maker - Physics 12

1. Which pair of concurrent forces may have a
resultant of 20. Newtons?
(1) 5.0 N and 10. N
(3) 20. N and 50. N
(2) 20. N and 20. N
(4) 30. N and 5.0 N
2. As the angle between two concurrent forces is
increased from 10º to 75º, the magnitude of the
resultant force
(1) decreases
(3) remains the same
(2) increases
3. An object is displaced 3 meters to the west and
then 4 meters to the south.
Which vector shown below best represents the
resultant displacement of the block?
(1)
(3)
6. Forces A and B have a resultant R. Force A and
resultant R are shown in the diagram below.
Which vector below best represents force B?
(1)
(3)
(2)
(4)
7. A girl attempts to swim directly across a stream
15 meters wide. When she reaches the other
side, she is 15 meters downstream. The
magnitude of her displacement is closest to
(1) 30 m
(3) 17 m
(2) 21 m
(4) 15 m
8. Which vector below best represents the resultant
of the two vectors shown to the right?
(2)
(4)
4. Two concurrent forces of 40 Newtons and X
Newtons have a resultant of 100 Newtons. Force
X could be
(1) 20 Newtons
(3) 80 Newtons
(2) 40 Newtons
(4) 150 Newtons
5. Two forces of 100 Newtons and 25 Newtons act
concurrently on an object. These two forces
could have a resultant force of
(1) 0 N
(3) 100 N
(2) 50 N
(4) 150 N
(1)
(3)
(2)
(4)
9. An object is displaced 12 meters to the right and
then 16 meters upward. The magnitude of the
resultant displacement is
(1) 1.3 meters
(3) 28 meters
(2) 20 meters
(4) 4.0 meters
10. The resultant of two concurrent forces is
minimum when the angle between them is
(1) 0º
(3) 90º
(2) 45º
(4) 180º
11. As the angle between two concurrent forces of
5.0 Newtons and 7.0 Newtons increases from
0º to 180º, the magnitude of their resultant
changes from
(1) 0 N to 35 N
(3) 12 N to 2.0 N
(2) 2.0 N to 12 N
(4) 12 N to 0 N
12. Two concurrent forces act at right angles to each
other. If one of the forces is 40 Newtons and the
resultant of the two forces is 50 Newtons, the
magnitude of the other force must be
(1) 10 N
(3) 30 N
(2) 20 N
(4) 40 N
13. The resultant of two forces acting on the same
point at the same time will be greatest when the
angle between the forces is
(1) 0º
(3) 90º
(2) 45º
(4) 180º
14. If a woman runs 100 meters north and then 70
meters south, her total displacement will be
(1) 30 m north
(3) 170 m north
(2) 30 m south
(4) 170 m south
15. Two forces (OA and OB) act
simultaneously at point O as
shown on the diagram to the
right.
The magnitude of the resultant force is closest to
(1) 8.0 N
(3) 15 N
(2) 11 N
(4) 16 N
16. Which vector best represents
the resultant of forces F1 and
F2 acting concurrently on
point P as shown in the
diagram to the right?
(1)
(3)
(2)
(4)
17. Two perpendicular forces act
on an object as shown in the
diagram to the right.
What is the magnitude of the resultant force on
the object?
(1) 17 N
(3) 7.0 N
(2) 13 N
(4) 5.0 N
18. A boat heads directly eastward across a river at
12 meters per second. If the current in the river
is flowing at 5.0 meters per second due south,
what is the magnitude of the boat's resultant
velocity?
(1) 7.0 m/s
(3) 13 m/s
(2) 8.5 m/s
(4) 17 m/s
19. Which pair of concurrent forces could produce a
resultant force having a magnitude of 10.
Newtons?
(1) 10. N. 10. N
(3) 4.7 N. 4.7 N
(2) 10. N. 30. N
(4) 4.7 N. 5.0 N
20. Which is a scalar quantity?
(1) speed
(3) force
(2) displacement
(4) momentum
21. A 3.0-newton force and a 4.0-newton force act
concurrently on a point. In which diagram below
would the orientation of these forces produce the
greatest net force on the point?
(1)
23. A 150.-newton force, F1, and a 200.-newton
force, F2, are applied simultaneously to the same
point on a large crate resting on a frictionless,
horizontal surface. Which diagram shows the
forces positioned to give the crate the greatest
acceleration?
(3)
(1)
(2)
(4)
22. A river flows due east at 1.5 meters per second.
A motorboat leaves the north shore of the river
and heads due south at 2.0 meters per second, as
shown in the diagram below.
Which vector best represents the resultant
velocity of the boat relative to the riverbank?
(2)
(3)
(4)
24. A ball is fired with a velocity of 12 meters per
second from a cannon pointing north, while the
cannon is moving eastward at a velocity of 24
meters per second. Which vector best represents
the resultant velocity of the ball as it leaves the
cannon?
(1)
(3)
(2)
(4)
(1)
(3)
(2)
(4)
25. A person walks 5.0 kilometers north, then 5.0
kilometers east. His displacement is closest to
(1) 7.1 kilometers northeast
(2) 7.1 kilometers northwest
(3) 10 kilometers northeast
(4) 10 kilometers northwest
26. Forces F1 and F2 act concurrently on point P, as
shown in the diagram below.
30. A 6-newton force and an 8-newton force act
concurrently on a box located on a frictionless
horizontal surface. Which top-view diagram
shows the forces producing the smallest
magnitude of acceleration of the box?
(1)
(2)
The equilibrant of F1 and F2 is
(1) 14 N southwest
(3) 20. N southwest
(2) 14 N southeast
(4) 20. N southeast
27. Which combination of three concurrent forces
acting on a body could not produce equilibrium?
(1) 1 N, 3 N, 5 N
(3) 3 N, 4 N, 5 N
(2) 2 N, 2 N, 2 N
(4) 4 N, 4 N, 5 N
28. In the diagram below, a 20.-newton force due
north and a 20.-newton force due east act
concurrently on an object, as shown in the
diagram below.
(3)
(4)
31. A constant force is exerted on a box as shown in
the diagram.
The additional force necessary to bring the
object into a state of equilibrium is
(1) 20. N, northeast
(3) 28 N, northeast
(2) 20. N, southwest
(4) 28 N, southwest
29. Into how many possible components can a
single force be resolved?
(1) an unlimited number
(2) two components
(3) three components
(4) four components at right angles to each other
As the angle θ decreases to 0° , the magnitude
of the horizontal component of the force
(1) decreases
(3) remains the same
(2) increases
32. Which is a vector quantity?
(1) displacement
(3) speed
(2) mass
(4) energy
33. Two students push on a sled. One pushes with a
force of 30. newtons east and the other exerts a
force of 40. newtons south, as shown in the
topview diagram below.
Which vector best represents the resultant of
these two forces?
36. A force vector was resolved into two
perpendicular components, F1 and F2, as shown
in the diagram below.
Which vector best represents the original force?
(1)
(3)
(1)
(2)
(4)
(2)
(3)
34. The diagram below represents a constant force F
acting on a box located on a frictionless
horizontal surface.
(4)
As the angle between the force and the
horizontal increases, the acceleration of the box
will
(1) decrease
(3) remain the same
(2) increase
35. Which is a vector quantity?
(1) distance
(3) speed
(2) time
(4) acceleration
37. Which term represents a vector quantity?
(1) work
(3) force
(2) power
(4) distance
38. Which vector diagram best represents a cart
slowing down as it travels to the right on a
horizontal surface?
(1)
40. Which diagram represents a box in equilibrium?
(1)
(2)
(2)
(3)
(4)
(3)
41. Which diagram represents the vector with the
largest downward component? [Assume each
vector has the same magnitude.]
(4)
(1)
(2)
39. Which terms represent a vector quantity and its
respective unit?
(1) weight – kilogram
(2) mass – kilogram
(3) force – newton
(4) momentum – newton
(3)
(4)
42. A block is at rest on an inclined plane as shown
in the diagram at the right. As angle θ is
increased, the component of the block's weight
parallel to the plane
(1) decreases
(2) increases
45. The diagram at the right
represents a force acting at point
P. Which pair of concurrent
forces would produce
equilibrium when added to the
force acting at point P?
(1)
(3)
(2)
(4)
(3) remains the same
43. The diagram below represents a car resting on a
hill.
46. The handle of a lawn roller is held at 45º from
the horizontal. A force, F, of 28.0 Newtons is
applied to the handle as the roller is pushed
across a level lawn, as shown in the diagram
below.
Which vector best represents the weight of the
car?
(1) A
(3) C
(2) B
(4) D
44. In the diagram below, the weight of a box on a
plane inclined at 30.º is represented by the
vector W.
What is the magnitude of the component of the
weight (W) that acts parallel to the incline?
(1) W
(3) 0.87 W
(2) 0.50 W
(4) 1.5 W
What is the magnitude of the force moving the
roller forward?
(1) 7.00 N
(3) 19.8 N
(2) 14.0 N
(4) 39.0 N
47. A ship changes direction several times and
finishes 20 miles north of its starting point. This
displacement is a vector quantity because it has
(1) both magnitude and direction
(2) magnitude but no direction
(3) direction but no magnitude
(4) neither magnitude nor direction
48. A 100.-newton force acts on point P, as shown
in the diagram below.
The magnitude of the vertical component of this
force is approximately
(1) 30. N
(3) 71 N
(2) 50. N
(4) 87 N
49. In the diagram below, a block rests on a ramp,
making angle Θ with the horizontal.
51. 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?
(1) 50.0 N
(3) 100. N
(2) 86.6 N
(4) 187 N
52. The diagram below shows a 10.0-kilogram mass
held at rest on a frictionless 30.0° incline by
force F.
If angle Θ is increased, what will occur?
(1) The block's mass will decrease.
(2) The block's weight will increase.
(3) The block's component of weight parallel to
the ramp will decrease.
(4) The block's component of weight parallel to
the ramp will increase.
50. In the diagram below, a box is at rest on an
inclined plane.
Which vector best represents the direction of the
normal force acting on the box?
(1) A
(3) C
(2) B
(4) D
What is the approximate magnitude of force F?
(1) 9.81 N
(3) 85.0 N
(2) 49.1 N
(4) 98.1 N
53. The speedometer in a car does not measure the
car’s velocity because velocity is a
(1) vector quantity and has a direction
associated with it
(2) vector quantity and does not have a direction
associated with it
(3) scalar quantity and has a direction associated
with it
(4) scalar quantity and does not have a direction
associated with it
54. The diagram below shows a sled and rider sliding down a snow-covered hill that makes an angle of 30.° with the
horizontal.
Which vector best represents the direction of the normal force, FN, exerted by the hill on the sled?
(1)
(2)
(3)
55. The diagram below represents a force vector, A
and resultant vector, R.
Which force vector B below could be added to
force vector A to produce resultant vector, R.
(1)
(3)
(2)
(4)
(4)
Answer Key
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