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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If the distance between Earth and the moon were doubled the force of attraction
between them would decrease. _________________________
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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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Acceleration is the rate at which ____ changes.
a. | distance | b. | velocity | c. | displacement | d. | mass |
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3.
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A car traveling around a corner at 18 meters per second is accelerating because
it is changing its:
a. | mass. | b. | speed. | c. | direction. | d. | displacement. |
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4.
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Newton’s second law of motion may be summarized by the following
formula:
a. | F = ma | b. | F =  | c. | m = Fa | d. | a =  |
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5.
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If you travel to a planet or a moon with a different radius or mass, all of the
following would change EXCEPT:
a. | the value of g. | b. | your weight. | c. | your
mass. | d. | your position. |
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6.
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The number value for the acceleration due to gravity is closest to:
a. | 1.0 m/s2 | b. | 10 m/s2 | c. | 100
m/s2 | d. | 1,000 m/s2 |
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7.
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The movement of the air, gravity, and your muscles all provide the ability to
change motion by producing:
a. | mass. | b. | weight. | c. | acceleration. | d. | inertia. |
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8.
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Jordan is moving on his skateboard. He can accelerate in all of the following
ways EXCEPT by:
a. | changing his position. | b. | changing his direction of
travel. | c. | increasing his speed. | d. | decreasing his
speed. |
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9.
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Units that may be used to indicate acceleration are:
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10.
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When Cheung pushes on Maria and her bicycle, they accelerate at 0.22 meters per
second per minute. If Carlos pushes on Maria and her bicycle with twice as much force, compared to
the acceleration caused by Cheung, the acceleration is:
a. | one quarter as much. | b. | half as much. | c. | twice as
much. | d. | the same. |
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11.
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Your weight on Earth’s surface depends upon:
a. | your mass. | b. | Earth’s mass. | c. | your distance from
Earth’s center. | d. | All of these |
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12.
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A 2.0-kilogram ball rolls down a ramp. If the ball accelerates at a rate of 12
meters per second per second, the net force causing the acceleration is:
a. | 24 newtons | b. | 12 newtons | c. | 10
newtons | d. | 6.0 newtons |
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13.
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A force of gravity may be exerted on you by:
a. | your best friend. | b. | a small pebble. | c. | Earth. | d. | All of these |
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14.
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If an object falls for 4 seconds in free fall, it travels about:
a. | 0.0 meters | b. | 4.0 meters | c. | 10
meters | d. | 40 meters |
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15.
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As the moon orbits Earth, it would be correct to say all of the following about
the moon EXCEPT:
a. | It is falling toward Earth. | b. | It is traveling with a nearly constant
speed. | c. | It is traveling with a nearly constant velocity. | d. | It is
accelerating. |
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16.
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The moon is orbiting Earth as pictured in the diagram:  If the gravitational force between Earth and the moon were to disappear, the
moon’s inertia would cause it to move toward:
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17.
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Lola exerts a force of 14 newtons on a 7.0-kilogram ball for 2.0 seconds. The
ball will accelerate at a rate of:
a. | 0.5 m/s2 | b. | 1.0 m/s2 | c. | 2.0
m/s2 | d. | 4.0 m/s2 |
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18.
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Abram lifts a 0.97-kilogram carton of milk straight up from the table, causing
it to accelerate at a rate of 4.9 meters per second per second. The amount of force he must exert to
accelerate the carton vertically from the table at this rate is:
a. | 0.97 newtons | b. | 0.48 newtons | c. | 9.5
newtons | d. | 14. newtons |
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19.
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Tamar rolls downhill on her bicycle. Moving with a speed of 3.0 meters per
second, her speed increases to 6.0 meters per second in 3.0 seconds. Her rate of acceleration
is:
a. | 1.0 m/s2 | b. | 2.0 m/s2 | c. | 3.0
m/s2 | d. | 6.0 m/s2 |
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20.
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The force of gravity between two objects will increase most if the masses of the
objects:
a. | increase and the distance between the objects increases. | b. | decrease and the
distance between the objects increases. | c. | increase and the distance between the objects
decreases. | d. | decrease and the distance between the objects
decreases. |
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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.| accelerating | direction | mass | | 9.8 m/s2 | third | first | | second | stays the same | decreases | | negative | free fall | weight | | | |
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21.
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If an object is slowing down, it is often described as decelerating or having
____________________ acceleration.
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22.
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A falling stone dropped off a cliff with only the force of gravity acting on it
is in _________________________.
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23.
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The acceleration due to gravity at the surface of Earth, g, is about
____________________.
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24.
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The force that acts between you and Earth is called your
____________________
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25.
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The velocity of a car moving around a corner at constant speed is changing
because its ____________________ is changing.
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26.
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To increase the gravitational force of attraction between two objects, the
distance between them could be decreased or their ____________________ could be increased.
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27.
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While the moon orbits Earth its speed is nearly constant but because its
direction is NOT, the moon is _________________________.
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Short Answer
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28.
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Arrange the expression of Newton’s second law in a formula to solve for
mass of an object if you know the force applied to the object and you know the acceleration of the
object.
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29.
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For any two objects, what two variables determine the strength of the
gravitational force of attraction between the objects?
a.
b.
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Problem
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30.
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Ana has a mass of 60 kilograms. Calculate her weight in newtons.
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31.
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Maria rolls a ball down her driveway. If the ball leaves her hand traveling at 2
meters per second and is traveling at 10 meters per second four seconds later, calculate the
acceleration of the ball.
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32.
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Yoko uses a marble launcher to accelerate a 30-gram marble at a rate of 20
meters/second2. Calculate the size of the force needed to launch the marble at a rate of
40 meters/second2.
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33.
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Kenji and his bicycle have a total mass of 70 kilograms.While Kenji pedals his
bicycle, he accelerates at a rate of 1.0 m/s 2. Frictional force due to the air,
Ff, of 30 newtons, is shown in the diagram below. Calculate the amount of the other
forces, Fg, Fn and Fp. 
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Essay
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34.
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The force of gravity exits between ALL objects. Why do you NOT notice the force
of gravity between you and a friend?
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35.
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The moon moves around Earth, held in orbit gravitational force. Why does Earth
not pull the moon to its surface?
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