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Sample Test
|
Chapter_03__Energy_and_Conservation_Laws
1. Conservation laws can be used even when the details of
what is occurring inside a system aren’t known.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
2. The momentum of an object never
changes.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
3. Kinetic energy is conserved in
elastic collisions.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
4. Linear momentum is conserved in
all collisions.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
5. Momentum is conserved only when
there is no friction.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
6. Work done within an isolated
system can increase the energy of the system.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
7. Centripetal force changes
linear momentum but not angular momentum.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
Consider a situation where two moving
objects collide and rebound from each other.
|
|
8. Kinetic energy is definitely
conserved.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Objects Collide Rebound
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
9. Linear momentum is definitely
conserved.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Objects Collide Rebound
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
Consider a situation where two moving
objects collide, stick to each other, and move off together.
|
|
10. Kinetic energy is definitely
not conserved.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Objects Collide Stick
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
11. Linear momentum is definitely
conserved.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Objects Collide Stick
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
12. The energy stored in a pile driver
is an example of gravitational potential energy.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
13. The energy stored in a
stretched spring is an example of gravitational potential energy.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
14. The energy of a body moving
across a horizontal surface is an example of kinetic energy.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
15. The energy in the water at the
top of a waterfall is an example of gravitational potential energy.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
16. The energy of a ball rolling
up an inclined plane is an example of both kinetic and gravitational
potential energy.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
17. For a body oscillating at the
end of a spring, the energy is only elastic potential energy.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
Consider a situation where a skater
pulls her arms inward, causing her rotation rate to speed up.
|
|
18. Angular momentum is conserved.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Skater Pulls Arms
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
19. Linear momentum is not
conserved.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Skater Pulls Arms
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
20. Kinetic energy is conserved.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Skater Pulls Arms
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
Consider a situation where you exert a
force F on
a crate of mass m,
moving it at a speed v a
distance d across
a floor in a time interval t.
|
|
21. The kinetic energy of the
crate is 1/2 mv2.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Exert a Force
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
22. The potential energy of the
crate is mgd.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Exert a Force
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
23. The linear momentum of the
crate is Fv.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Exert a Force
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
24. The work you do on the crate
is Fv.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Exert a Force
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
25. The power you supply to the
crate is Fd/t.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Exert a Force
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
26. The measure of a body’s
resistance to being rotated is its angular momentum.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
27. A watt is equal to 746
horsepower.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
28. You carry a 20-N box 5 m
horizontally across a room. The work you do is 100 N-m.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/12/2016 12:20 PM
|
|
|
Consider a situation where you carry a
20-N box up a flight of stairs, raising its elevation by 5 m.
|
|
29. The work you do is 4 J.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Carry 20 N Box
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
30. The increase of potential
energy of the box is 100 J.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Carry 20 N Box
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
31. You drop the box. As it falls
to its original level, its kinetic energy is 100 J.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Carry 20 N Box
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
32. When the box hits the floor
its kinetic energy is converted into internal energy.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Carry 20 N Box
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
33. A 2 kg car moving towards the
right at 4 m/s collides head on with an 8 kg car moving towards the left at 2
m/s, and they stick together. After the collision, the velocity of the
combined bodies is 0.8 m/s pointing towards the left.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
34. A person runs up a long flight
of stairs in 10 seconds. If the person’s weight is 600 N and the vertical
height of the stairs is 20 meters, the person’s power output is 1,200 W.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
35. A rocket can never go faster
than the speed of its exhaust.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
36. When more people ride upward
in an elevator, more power is required.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
37. A spacecraft can gain energy
by passing near a planet.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
38. When a car comes to a stop its
kinetic energy is converted to internal energy in its brakes, heating them
up.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
39. The collision between two cars
in an accident is an inelastic collision.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
40. If the velocity of an aircraft
is doubled, the kinetic energy of the aircraft is also doubled.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
41. In a closed system, the
kinetic energy plus the potential energy is a constant.
|
ANSWER:
|
True
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
42. A barrel rolling down an
inclined ramp has only kinetic energy.
|
ANSWER:
|
False
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
True / False
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
43. What does it mean for a
physical quantity in a system to be conserved?
|
|
a.
|
It is used in the most efficient manner possible.
|
|
|
b.
|
It stays in its original state forever.
|
|
|
c.
|
The total amount of it in the system stays constant.
|
|
|
d.
|
none of the above.
|
|
ANSWER:
|
c
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
44. Kinetic energy is conserved in
|
|
a.
|
an inelastic collision.
|
|
|
b.
|
an elastic collision.
|
|
|
c.
|
any collision where two objects rebound off each other.
|
|
|
d.
|
none of the above.
|
|
ANSWER:
|
b
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 9:55 PM
|
|
|
45. The linear momentum of a truck
will be greater than that of a bus if
|
|
a.
|
the truck’s mass is larger than the bus’s but its speed
is the same.
|
|
|
b.
|
the truck’s speed is larger than the bus’s but its mass
is the same.
|
|
|
c.
|
the truck’s mass and speed are both larger than the
bus’s.
|
|
|
d.
|
any of the above.
|
|
ANSWER:
|
d
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 9:56 PM
|
|
|
46. What are the SI units of
momentum?
|
|
a.
|
kg m/s
|
b.
|
pascals
|
|
|
c.
|
joules
|
d.
|
watts
|
|
ANSWER:
|
a
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
47. Work is done on an object when
|
|
a.
|
it moves in a circle at constant speed.
|
|
|
b.
|
it is accelerated in a straight line.
|
|
|
c.
|
it is carried horizontally at constant speed.
|
|
|
d.
|
all of the above
|
|
ANSWER:
|
b
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 9:57 PM
|
|
|
48. If a force on an object is
aimed opposite the direction of the object’s velocity, the force does
|
|
a.
|
no work.
|
b.
|
positive work.
|
|
|
c.
|
negative work.
|
d.
|
any of the above.
|
|
ANSWER:
|
c
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 9:58 PM
|
|
|
49. If a force on an object is
aimed in the direction of the object’s velocity, the force does
|
|
a.
|
no work.
|
b.
|
positive work.
|
|
|
c.
|
negative work.
|
d.
|
any of the above.
|
|
ANSWER:
|
b
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 9:58 PM
|
|
|
50. If a force on an object is
aimed perpendicular to the direction of the object’s velocity, the force does
|
|
a.
|
no work.
|
b.
|
positive work.
|
|
|
c.
|
negative work.
|
d.
|
any of the above.
|
|
ANSWER:
|
a
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 9:59 PM
|
|
|
Consider a situation where two moving
objects collide and rebound from each other.
|
|
51. Kinetic energy
|
|
a.
|
is definitely conserved.
|
|
|
b.
|
is definitely not conserved.
|
|
|
c.
|
may or may not be conserved, depending on the nature of
the collision.
|
|
|
d.
|
none of the above
|
|
ANSWER:
|
c
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Objects Collide Rebound
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 9:59 PM
|
|
|
52. Linear momentum
|
|
a.
|
is definitely conserved.
|
|
|
b.
|
is definitely not conserved.
|
|
|
c.
|
may or may not be conserved, depending on the nature of
the collision.
|
|
|
d.
|
none of the above
|
|
ANSWER:
|
a
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Objects Collide Rebound
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 9:59 PM
|
|
|
Consider a situation where two moving
objects collide, stick to each other, and move off together.
|
|
53. Kinetic energy
|
|
a.
|
is definitely conserved.
|
|
|
b.
|
is definitely not conserved.
|
|
|
c.
|
may or may not be conserved, depending on the nature of
the collision.
|
|
|
d.
|
none of the above
|
|
ANSWER:
|
b
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Objects Collide Stick
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 10:00 PM
|
|
|
54. Linear momentum
|
|
a.
|
is definitely conserved.
|
|
|
b.
|
is definitely not conserved.
|
|
|
c.
|
may or may not be conserved, depending on the nature of
the collision.
|
|
|
d.
|
none of the above
|
|
ANSWER:
|
a
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Objects Collide Stick
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 10:00 PM
|
|
|
55. Internal energy
|
|
a.
|
remains constant.
|
|
|
b.
|
decreases.
|
|
|
c.
|
increases.
|
|
|
d.
|
varies but in a way that cannot be predicted.
|
|
ANSWER:
|
c
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Objects Collide Stick
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 10:01 PM
|
|
|
56. Which of the following is not
an example of potential energy?
|
|
a.
|
The energy stored in a pile driver.
|
|
|
b.
|
The energy stored in a stretched spring.
|
|
|
c.
|
The energy of a body moving across a horizontal surface.
|
|
|
d.
|
The energy in the water at the top of a waterfall.
|
|
ANSWER:
|
c
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
6/13/2016 10:29 AM
|
|
|
57. The energy of a ball rolling
up an inclined plane
|
|
a.
|
is entirely kinetic.
|
|
|
b.
|
is entirely potential.
|
|
|
c.
|
is both kinetic and potential.
|
|
|
d.
|
none of the above
|
|
ANSWER:
|
c
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 10:02 PM
|
|
|
58. For a body oscillating at the
end of a spring, the energy is
|
|
a.
|
kinetic energy.
|
|
|
b.
|
elastic potential energy.
|
|
|
c.
|
gravitational potential energy.
|
|
|
d.
|
all of the above.
|
|
|
e.
|
none of the above.
|
|
ANSWER:
|
d
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 10:03 PM
|
|
|
Consider a situation where a skater
pulls her arms inward, causing her rotation rate to speed up.
|
|
59. Angular momentum
|
|
a.
|
is definitely conserved.
|
|
|
b.
|
is definitely not conserved.
|
|
|
c.
|
may or may not be conserved.
|
|
|
d.
|
none of the above
|
|
ANSWER:
|
a
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Skater Pulls Arms
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/14/2016 2:46 PM
|
|
|
60. Linear momentum
|
|
a.
|
is definitely conserved.
|
|
|
b.
|
is definitely not conserved.
|
|
|
c.
|
may or may not be conserved.
|
|
|
d.
|
none of the above
|
|
ANSWER:
|
a
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Skater Pulls Arms
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 10:03 PM
|
|
|
61. Kinetic energy
|
|
a.
|
is definitely conserved.
|
|
|
b.
|
is definitely not conserved.
|
|
|
c.
|
may or may not be conserved.
|
|
|
d.
|
none of the above
|
|
ANSWER:
|
b
|
|
POINTS:
|
1
|
|
QUESTION TYPE:
|
Multiple Choice
|
|
HAS VARIABLES:
|
False
|
|
PREFACE NAME:
|
Skater Pulls Arms
|
|
DATE CREATED:
|
6/13/2016 10:29 AM
|
|
DATE MODIFIED:
|
7/13/2016 10:04 PM
|
|
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