Review Game
Chapters 7, 8 & 9
Multiple Choice 1
Which of the following statements is correct?
a. The farther the force is from the axis of rotation,
the more torque is produced.
b. The closer the force is to the axis of rotation, the
more torque is produced.
c. The closer the force is to the axis of rotation, the
easier it is to rotate the object.
d. The farther the force is from the axis of rotation,
the less torque is produced.
A
Multiple Choice 2
Paint is splattered on a canvas. After the
paint sticks to the canvas, the total
momentum of the paint and canvas
a. is zero. c. is equal and opposite.
b. increases. d. decreases.
A
Multiple Choice 3
The relationship between linear acceleration
and angular acceleration is given by:
a. v = d/t c. v = r
b. a = r d. d = r
B
Multiple Choice 4
As you get farther from the center of Earth,
your weight will ____.
a. decrease c. remain the same
b. increase d. can't tell from
information given
A
Multiple Choice 5
Which of the following has the greatest
momentum?
a. truck with a mass of 2250 kg moving at a
velocity of 25 m/s
b. car with a mass of 1210 kg moving at a velocity
of 51 m/s
c. truck with a mass of 6120 kg moving at a
velocity of 10 m/s
d. car with a mass of 1540 kg moving at a velocity
of 38 m/s
B
Multiple Choice 6
A child with a mass of 23 kg rides a bike with a
mass of 5.5 kg at a velocity of 4.5 m/s to the
south. Compare the momentum of the child with
the momentum of the bike.
a. Both the child and the bike have the same
momentum.
b. The bike has a greater momentum than the
child.
c. The child has a greater momentum than the
bike.
d. Neither the child nor the bike has momentum.
C
Multiple Choice 7
If a force is exerted on an object, which statement
is true?
a. A large force always produces a large change in
the object’s momentum.
b. A large force produces a large change in the
object’s momentum only if the force is applied
over a very short time interval.
c. A small force applied over a long time interval
can produce a large change in the object’s
momentum.
d. A small force produces a large change in the
object’s momentum.
C
Multiple Choice 8
A force is applied to stop a moving shopping
cart. Increasing the time interval over
which the force is applied
a. requires a greater force.
b. has no effect on the force needed.
c. requires a smaller force.
d. requires the same force.
C
Multiple Choice 9
Which of the following situations is an
example of a visible change in
momentum?
a. A hiker walks through a spider’s web.
b. A car drives over a pebble.
c. A volleyball hits a mosquito in the air.
d. A baseball is hit by a bat.
D
Multiple Choice 10
Which conditions will result in the smallest
change in momentum?
a. a large force over a long time period
b. a large force over a short time period
c. a small force over a long time period
d. a small force over a short time period
D
Question 1
What is the momentum of a
13.0 g bullet moving with a
velocity of 320 m/s to the
right?
4.16 kgm/s to the right
Question 2
A basketball has a diameter
of 24.1 cm and mass of
0.60 kg. It rolls 18 m down
the court. What is the
angular displacement?
149 rad
Question 3
A bolt is to be tightened with a
torque of 7.2 Nm. If you
have a wrench that is 0.30 m
long, what is the least amount
of force you must exert?
24 N
Question 4
What is the momentum of a
72 kg running with a velocity
of 6 m/s southwest?
432 kgm/s southwest
Question 5
What is the speed of a satellite
that is in orbit 260 km above
Mercury’s surface.
mM = 3.30 x 10 23 kg
rM = 2.44 x 10 6 m
2855 m/s
Question 6
A 67 kg ice skater moving to the right
with a velocity of 2.27 m/s throws a
0.15 kg snowball to the right with a
velocity of 20 m/s. What is the
velocity of the ice skater after
throwing the snowball. Disregard
friction.
2.23 m/s to the right
Question 7
A 0.14 kg baseball moving at
+22.6 m/s is slowed to a stop
by a catcher who exerts a
constant force of -373 N. How
long does it take this force to
stop the ball?
0.00848 s
Question 8
Two balls have their centers
2.0 m apart. What is the
gravitational force between
them? (m1=8.1 kg, m2=6.0 kg)
8.10e-10 N
Question 9
A tire has a radius of 55 cm
and a velocity of 17 m/s.
What is the angular velocity
of the tire?
30.9 rad/s
Question 10
Compute the gravitational
force the Sun exerts on
Jupiter.
mJ = 1.90 x 10 27 kg
rJ = 7.78 x 1011 m
4.17x 1023 N
Question 11
A football punter accelerates
a 0.60 kg football from rest
to a speed of 6.3 m/s in
0.21 s, what constant force
does the punter exert on the
ball?
18 N upward
Question 12
A 1.28 kg skateboard is moving at a
speed of 5.58 m/s when a 0.80 kg
cat drops from a tree onto the
skateboard. What is the speed of
the skateboard-cat combination?
3.43 m/s
Question 13
What is the torque on a
bolt produced by a 15 N
force exerted
perpendicular to a
wrench that is 28 cm
long?
4.2 Nm
Question 14
What happens to the gravitational
force between two masses when
the distance between the masses
is doubled?
Force is quartered
Question 15
The moon has a period of 27.3 days
and a mean distance of 3.90 x 105
km from the center of Earth.
Using this data predict the mean
distance from Earth’s center for an
artificial satellite that has a period
of 4.80 days?
1.22 x 105 km
Question 16
Two carts with masses of 4.30 kg
and 2.94 kg move toward each
other on a frictionless track with
speeds of 5.42 m/s and 3.12 m/s
respectively. The carts stick
together after colliding head-on.
Find the final speed.
1.95 m/s