Multiple Choice
Identify the
choice that best completes the statement or answers the question.
Force = ma, mass = F/a,
acceleration = F/m
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1.
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Which of the following is NOT an example of a force?
a. | A fisherman pulling up an anchor from the bottom of the sea. | c. | A push on the
pedals of a bike causing it to move forward. | b. | An arrow that keeps moving once it is set in
motion. | d. | A push that causes
a skateboard to move. |
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2.
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 Find the acceleration of the object above. a. | 98 m/s/s | c. | 14 m/s/s | b. | 2 m/s/s | d. | 1/2 m/s/s |
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3.
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A girl is riding her bike on a flat road when her boy friend on another bike
comes up behind her and pushes, or adds an unbalanced force in the same direction as the girl riding
the bike. The girl’s speed will
a. | increase | c. | decrease | b. | stay the same |
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4.
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Car | Mass (kg) | Force (N) | A | 10 | 10 | B | 10 | 20 | C | 10 | 30 | D | 10 | 40 | | | |
Analyze the table above to determine the car with the MOST
amount of acceleration.
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5.
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A student pushes her friend on a skateboard with a force of 40 Newton’s
for about 50 meters, Calculate the amount of work.
a. | 2000 joules | c. | 0.8 joules | b. | 10 joules | d. | 1.25 joules |
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6.
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 Determine the resulting force from the diagram
above. a. | 2 N net force to the right | c. | 15 N net force to the
right | b. | 5 N net force to the right | d. | 50 N net force to the right |
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7.
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 Find the force applied to the object above.
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8.
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Momentum
a. | push or pull | c. | the tendency of an object to resist motion | b. | the product of the
mass and velocity | d. | two
surfaces with opposing motion |
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9.
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Inertia
a. | the product of the mass and velocity | c. | two surfaces with opposing
motion | b. | the tendency of an object to resist being moved or change in
speed | d. | push or
pull |
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10.
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 Find the mass of the object above. a. | 12 kg | c. | 2 kg | b. | 1/2 kg | d. | 72 kg |
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11.
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Work done in a given amount of time is called
a. | Force | c. | Volume | b. | Mass | d. | Power |
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12.
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An ice skater is able to skate on ice due to the pressure placed on the ice by
the thin blade melting the ice creating a thin layer of water on the sheet of ice. This creates
less ____________ allowing the skater to glide across the ice very easily.
a. | inertia | c. | torque | b. | momentum | d. | friction |
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13.
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 Find the force applied to the object above.
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14.
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A student pushes a box across the floor with a force of 20 Newton’s, and
in doing so does 1000 joules of work. How far did the student push the box?
a. | 0.02 meters | c. | 20,000 meters | b. | 1020 meters | d. | 50 meters |
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15.
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Force
a. | tendency to resist motion | c. | product of mass and
velocity | b. | push or pull | d. | two surfaces with opposing motion |
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16.
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A student pushes her little brother in a wagon with a force of 20 Newton’s
for about 200 meters, Calculate the amount of work.
a. | 10 joules | c. | 1/10 joule | b. | 4000 joules | d. | 400 joules |
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17.
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 Find the acceleration of the object above. a. | 1/2 m/s/s | c. | 242 m/s/s | b. | 2 m/s/s | d. | 22 m/s/s |
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18.
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Car | Mass (kg) | Force (N) | A | 2 | 20 | B | 4 | 20 | C | 6 | 20 | D | 8 | 20 | | | |
Analyze the table above to determine the car with the LEAST
amount of acceleration.
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19.
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A student balances his bike at a stoplight, completely stopped. The
student will roll forward when
a. | the inertia pushes the bike forward | c. | the balanced force acts on the
pedals. | b. | two opposing forces act on the pedals, so that the net force is
zero. | d. | an unbalanced force
with a net force on the pedals in a forward direction. |
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20.
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 Find the mass of the object above. a. | 5 kg | c. | 1/5 kg | b. | 20 kg | d. | 10 kg |
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21.
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 Four different students, student A, B,C, and D,
pull from four different directions. Which student will end up pulling the blue square in their
direction? a. | Student A | c. | Student C | b. | Student B | d. | Student D |
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22.
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 Find the force applied to the object above. a. | 20 N | c. | 4 N | b. | 100 N | d. | 1/4 N |
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23.
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 An acorn falls from an oak tree branch and hits the
ground. As it falls to the ground, identify at which point(s) the force of gravity acts on the
acorn.
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24.
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A player runs to first base, if the student does 1000 joules of work in 4
seconds it took him to reach first from home plate, how much power did the player use?
a. | 0.004 watts | c. | 250 watts | b. | 1004 watts | d. | 4000 watts |
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25.
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 Find the acceleration of the object above. a. | 125 m/s/s | c. | 25 m/s/s | b. | 5 m/s/s | d. | 1/5 m/s/s |
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