Modified True/False Indicate
whether the statement is true or false. If false, change the identified word or phrase to make
the statement true.
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1.
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The name for a quantity, like force, that has both a size and a direction is
scalar. _________________________
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Multiple Choice Identify the
choice that best completes the statement or answers the question.
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2.
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All of the following are examples of vectors EXCEPT:
a. | force. | b. | velocity. | c. | temperature. | d. | acceleration. |
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3.
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Of the following measurements, the one that would be incomplete without giving a
direction is:
a. | time. | b. | temperature. | c. | length. | d. | force. |
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4.
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A vector, such as force, can be represented by drawing an arrow. Which of the
following statements is CORRECT?
a. | The length of the arrow indicates the direction of the force. | b. | The length of the
arrow indicates the strength of the force. | c. | The length of the arrow indicates the unit of
force used. | d. | The point of the arrow indicates the strength of the
force. |
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5.
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On a vector drawing, Alexi decides to use a scale of 1.0 cm = 2.0 N. The force
represented by an arrow 3.5 cm long would be:
a. | 1.0 N | b. | 2.0 N | c. | 3.5
N | d. | 7.0 N |
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6.
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When two or more forces act on an object, the sum of the forces can ALWAYS be
called a(n):
a. | balanced force. | b. | unbalanced force. | c. | net
force. | d. | friction force. |
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7.
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A book exerts a force 2.0 newtons on a table as it lies on the table. The force
exerted by the table on book is:
a. | 0 N | b. | 0.2 N | c. | 2.0
N | d. | 20 N |
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8.
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Refer to the diagram below which shows 4 forces applied to an airplane.
Due to the forces acting on the airplane,
the airplane moves:
a. | faster. | b. | slower. | c. | up. | d. | down. |
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9.
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The diagram below is a free body diagram picturing a cyclist moving along a
highway. 4 forces, represented by arrows A, B, C, and D are acting on the cyclist as he
pedals. The arrow that would best represent the
normal force is:
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10.
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World speed record-holder, Finian Maynard, is sailing at an increasing speed as
shown in the diagram below: The size of force F must be
greater than:
a. | 100 N | b. | 900 N | c. | 1,000
N | d. | 1,100 N |
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11.
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A 4,000-pound car is parked on a level street as shown in the diagram
below: If the rear of the car is supported by a
normal force of 2,200 pounds, the normal force F supporting the front must be:
a. | 1,800 N | b. | 2,200 N | c. | 2,800
N | d. | 4,000 N |
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12.
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Rachael is pushing uphill with a force of +20 newtons on her bicycle that has a
weight of -100 newtons. The bicycle pushes downhill on Rachael with a force of:
a. | +20 N | b. | -20 N | c. | +100
N | d. | 0 N |
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13.
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The diagram below shows four net forces (1, 2, 3, and 4) that could be applied
in different directions to a cart. If each net force
applied has the same size, the force that has the smallest effect on the cart in the vertical or
y-direction is:
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14.
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4 forces are acting on an object as shown in the diagram below: If the object is moving with constant velocity, the size of force F must
be:
a. | 0 N | b. | 30 N | c. | 40 N
| d. | 100 N |
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Completion Complete each
statement.
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Select the correct term to complete each sentence. There are extra terms in
the list.equilibrium | net | free-body | mass | gravity | accelerating | friction | vector | gravity | | | |
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15.
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The force which is the sum of two or more forces on a object is called
____________________ force.
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16.
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The condition or state that exists when the net force on an object is zero is
called ____________________.
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17.
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A diagram that uses vectors to show all the forces acting on an object is a
_________________________ diagram.
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18.
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A ____________________ has both an amount and a direction.
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Problem
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19.
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The diagram below represents an object moving to the right with a constant
velocity. What is the value of force
F?
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20.
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Ruis decides to represent force vectors on his vector diagram using a scale of 1
centimeter equals 3 newtons. Using the same scale and a metric ruler, represent a force of 12 newtons
directed in a positive x-direction.
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21.
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While standing still as shown in the diagram, two people are pulling on a rope,
each exerting a force of 100 newtons. a. What is the net
force on the rope? b. What is the tension in the rope?
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22.
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The diagram represents a cart moving at a constant speed to the right. A force
of 5 newtons is applied by the spring scale which is attached. a. | What is the size and the
direction of the force of friction acting on the cart? | b. | Would the reading on the spring scale be
larger or smaller than 5 N to the right if the cart is accelerated to the
right? | | |
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23.
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A 4-N weight is attached by a string to a 2-N cart on a ramp as shown in the
diagram below. The string passes over a nearly frictionless pulley at the top of the ramp.The cart
is free to move to the top of the ramp and to the bottom of the ramp but is attached so it will not
leave the ramp. The cart is pushed toward the bottom of
the ramp and released. Describe the motion of the cart from the moment it is released until it comes
to rest.
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Other
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24.
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A plane flies northwest at 500 kilometers per hour at angle of 53 degrees north
of west. Using a scale of 1 centimeter equals 100 kilometers per hour, draw the two vectors, north
and west, that could be used to represent the 500 kilometer per hour velocity of the plane.
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