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Worksheets

QSE 3 Review

Total questions: 78

Worksheet time: 4hrs 33mins

Name
Class
Date
1.
Calculate the KE of a runner that has a mass of 80 kg and is running at a velocity of 8 m/s
a)
5120 J
b)
320 J
c)
640 J
d)
2560 J
2.
____________ is the ability to cause change. 
a)
Energy 
b)
Force 
c)
Friction
d)
Motion
3.
Energy due to motion is ____________ energy. 
a)
Potential 
b)
Energy
c)
Kinetic
d)
Friction
4.
__________ is stored energy. 
a)
Potential
b)
Kinetic
c)
None of the above 
d)
All of the above 
5.
Gravitational potential energy depends on the ________ and ________ of the object. 
a)
Height and mass
b)
Friction and movement
c)
Mass and Movement
d)
Height and Friction 
6.
When you stretch a rubber band, you are storing __________ energy. 
a)
gravitational potential
b)
elastic potential
c)
kinetic 
d)
none of the above 
7.
Energy can not be created or destroyed, only converted from one form to another.
a)
true
b)
false
8.
At which point is potential energy greatest?
a)
W
b)
X
c)
Y
d)
Z
9.
As a pendulum swings from its highest to lowest position, what happens to its kinetic and potential energy? 
a)
Both the potential energy and kinetic energy decrease
b)
The potential energy decreases while the kinetic energy increases 
c)
The kinetic energy decreases while the potential energy increases 
d)
Bothe the potential energy and kinetic energy increase 
10.
At which point is kinetic energy greatest? 
a)
W
b)
X
c)
Y
d)
Z
11.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
12.
When a pendulum swings, at which point is potential energy at its greatest?
a)
1
b)
2
c)
3
d)
4
13.
if you push a cart with a force of 60 N resulting in 120 J of work.. how far did you move the cart? 
a)
7200 m
b)
0 m
c)
2 N 
d)
2 m
14.
What is it called  when one form of energy is changed to another form?
a)
Energy change
b)
Energy conversion
c)
Electrical conversion
d)
Force change
15.
What is energy?
a)
the ability to do work
b)
mass and volume
16.

What is the S.I unit of work?

a)

N.m2

b)

(Kg.m2) / s2

c)

J/m

d)

J

17.

In which scenario is work = 0 J ?

a)

Pushing a stationary wall

b)

Pulling a trolley car

c)

Pushing a book across the table

d)

Dropping a set of keys from a height, h.

18.

Power depends on force and speed.

a)

True

b)

False

19.

The coefficient of kinetic friction between a large box and the floor is 0.21. A person pushes horizontally on the box with a force of 165 N for a distance of 2.8 m. If the mass of the box is 72 kg, what is the total work done on the box? (Round your answer to a whole number)

a)

51

b)

49

c)

47

d)

45

20.

Work is zero if the force has a component in the direction opposite of motion.

a)

True

b)

False

21.

A 3 kg plate is tossed across the room with an acceleration of 13 m/s2 in 2.5 sec. Calculate the amount of power it took to toss the plate.

a)

290.5 W

b)

1267.5 W

c)

507 W

d)

3000 W

22.

An object weighing 20 N moves horizontally toward the right a distance of 5.0 m. What is the work done on the object by the force of gravity?

a)

The work done on the object by the force of gravity is 50 J.

b)

The work done on the object by the force of gravity is zero joules.

c)

The work done on the object by the force of gravity is 4.0 J.

d)

The work done on the object by the force of gravity is 0.25 J.

e)

The work done on the object by the force of gravity is 100 J.

23.

You pick up a 3.8 kg can of paint from the ground and lift it to a height of 1.4 m. You hold the can stationary for half a minute, waiting for a friend on a ladder to take it. How much work do you do during this time (when the can of paint was stationary)?

a)

52 J

b)

30 J

c)

0 J

d)

25 J

24.

If the net work done on an object is positive, what can you conclude about the object's motion?

a)

The object is speeding up.

b)

The object is moving with a constant velocity.

c)

The object is slowing down.

d)

The object is at rest; its position is constant.

25.

You raise a bucket of water from the bottom of a well that is 12 m deep. The mass of the bucket and the water is 5.00 kg, and it takes 15 s to raise the bucket to the top of the well. How much power is required?

a)

39 W

b)

41 W

c)

43 W

d)

45 W

26.
How much work is being done with 200 N of force over 426 meters?
a)
85,200 J
b)
45,620 J
c)
90,480 J
d)
62,329 J
27.
If 150 Joules of work is needed to move a box 10 meters, what force was used? 
a)
1500 N
b)
15 N
c)
1.5 N
d)
150 N
28.

Which of the following is the best example of work being done.

a)

doing homework

b)

lifting a box

c)

pushing a stationary box

d)

holding a box

29.
In which of these cases is work being done? 
a)
A student sleeps
b)
A student pushes a locked door that does not move
c)
a student carries his chair into another room
d)
A student sits on the carpet
30.
True or false: when the distance an object moves is zero the work done on the object is also zero.  
a)
True
b)
False
31.
Work is done when a weightlifter holds a barbell still above his head.
a)
True
b)
False
32.

You push against the back of your friends car that is stuck. You push and be become very tired, but the car does not move. Did you do work?

a)

Yes, work was done

b)

No, work wasn't done

33.

What would 54N be an example of?

a)

work

b)

power

c)

distance

d)

force

34.

what would 1m be an example of?

a)

work

b)

power

c)

time

d)

distance

35.

what would 14J be an example of?

a)

work

b)

distance

c)

time

d)

force

36.

What is an example of a force?

a)

Energy

b)

Power

c)

Pressure

d)

Weight

37.
The amount of work done in a certain amount of time is known as 
a)
work
b)
effort force
c)
resistance force 
d)
power
38.

If you increase your work and decrease your time, you will have

a)

more power

b)

less power

c)

same amount of power

d)

power rating can not be determined

39.

What would you solve for if given time and work?

a)

power

b)

force

c)

distance

d)

work

40.

what would you solve for if given distance and force?

a)

work

b)

power

c)

time

d)

motion

41.

What would you solve for if you were given work and distance

a)

power

b)

time

c)

force

d)

motion

42.

If you have the same work as someone, but in less time

a)

You are more powerful

b)

You are less powerful

c)

You have the same power

43.

Person A and Person B are both using the same amount of work to lift something. Person A takes half as much time to do it. Who has greater power.

a)

Person A

b)

Person B

44.

This term refers to the amount of matter contained in an object.

a)

Joules

b)

Matter

c)

Energy

d)

Mass

45.

This term refers to a force being used to move an object.

a)

Energy

b)

Joules

c)

Mass

d)

Work

46.

This is the standard unit for measuring energy.

a)

Joules

b)

Newtons

c)

Matter

d)

Mass

47.

This is a type of potential energy.

a)

Sound energy

b)

Electrical energy

c)

Chemical energy

d)

Thermal energy

48.

This is a type of kinetic energy.

a)

Gravitational energy

b)

Elastic energy

c)

Sound energy

d)

Nuclear energy

49.

This is they type of energy stored in a battery.

a)

Gravitational energy

b)

Elastic energy

c)

Nuclear energy

d)

Chemical energy

50.

This type of energy is a measure of how fast the particles of an object are moving.

a)

Sound energy

b)

Thermal energy

c)

Radiant energy

d)

Thermal energy

51.

If two objects are about to be dropped from some height, the heavier one has:

a)

Less potential energy

b)

More potential energy

c)

The same amount of potential energy

52.

If two marbles are rolled down a ramp from some height towards a container the _______ marble will move the container farther because it possess more _________ energy as it approaches the end of the ramp.

a)

heavier, kinetic

b)

heavier, potential

c)

lighter, kinetic

d)

lighter, potential

53.

What energy transformations are occurring in this picture?

a)

gravitational potential --> sound --> thermal

b)

chemical potential --> mechanical --> elastic potential --> gravitational

c)

electrical --> sound --> thermal --> radiant

d)

chemical potential --> radiant --> thermal

54.

What energy transformation are occurring in this picture?

a)

gravitational potential --> sound --> thermal

b)

chemical potential --> mechanical --> elastic potential --> gravitational

c)

electrical --> sound --> thermal --> radiant

d)

chemical potential --> radiant --> thermal

55.

At which point would this roller coaster possess the greatest amount of potential energy?

a)

1

b)

2

c)

3

d)

4

56.

At which point would this roller coaster possess the most kinetic energy?

a)

1

b)

2

c)

3

d)

4

57.

At which point on this roller coaster would the amount of total energy equal the amount of potential energy?

a)

1

b)

2

c)

3

d)

4

58.

List one reason why a roller coaster will eventually come to a stop, even if the brakes are not applied.

4 lines
59.
The law of conservation of momentum states that, 
a)
p before is less than p after
b)
p before is the same as p after
c)
p before is more than p after
60.
A 0.250 kg cart moving at 0.400 m/s has how much momentum?
a)
0.1 kg-m/s
b)
1 kg-m/s
c)
10 kg-m/s
d)
100 kg-m/s
61.
If 2 objects collide and stick together, what will happen to their velocities?
a)
velocities will increase
b)
velocities will decrease
c)
velocities will stay the same
d)
none of the above
62.
A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?
a)
0 kgm/s
b)
30 kgm/s
c)
50 kgm/s
d)
10 kgm/s
63.
A large box slides across a frictionless surface with a velocity of 12 m/s and a mass of 4 kg,  collides with a smaller box with a mass of 2 kg that is stationary.  The boxes stick together. What is the velocity of the two combined masses after collision?
a)
0 m/s
b)
4 m/s
c)
8 m/s
d)
12 m/s
64.
A biker with a mass of 75 kg moves along the path with a constant velocity of 5 m/s. What is the biker's momentum?
a)
25 m/s
b)
375 m/s
c)
25 kg m/s
d)
375 kg m/s
65.
When the speed of an object is doubled, its momentum
a)
remains unchanged in accord with the conservation of momentum.
b)
doubles
c)
quadruples
d)
decreases
66.
In this type of collision, objects tend to "stick" together.
a)
elastic
b)
inelastic 
c)
They "stick" together in both types of collisions
67.
A big fish swims upon and swallows a small fish at rest. After lunch, the big fish has less
a)
momentum
b)
velocity
c)
mass
68.
An 1 kg object moving to the right at 2 m/s collides inelastically with a 1 kg object moving to the left at 2 m/s. The final velocity of both objects will be 
a)
0 m/s
b)
1 m/s
c)
2 m/s
d)
4 m/s
69.
A 10kg toy truck moves at 5m/s East. It collides head-on with a 5kg toy car moving 10 m/s moving west. What is the total momentum of the system?
a)
0 kgm/s
b)
30 kgm/s
c)
50 kgm/s
d)
10 kgm/s
70.
The difference between a car hitting a wall vs. a car hitting a hay stack is
a)
the Impulse on the car hitting the wall is greater
b)
the change in momentum of the car hitting the wall is greater
c)
the force on the car hitting the hay stack is greater
d)
the collision time of the car hitting the hay stack is greater
71.
Softer landings tend to
a)
increase impact force
b)
increase force
c)
increase collision time
d)
increase change in momentum
72.
The graph shows the force on an object of mass M as a function of time. For the time interval 0 to 4 s, the total change in the momentum of the object is
a)
40 kg m/s 
b)
20 kg m/s
c)
0 kg m/s 
d)
– 20 kg m/s
73.
In any collision (crash) the ______ is ALWAYS constant.
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
74.
A 10kg toy truck moves at 5m/s East. It collides and bounces off of a 5kg toy car moving 10 m/s moving west. Which equation would you use to solve for the final velocity of the car?
a)
m1v1i+m2v2i=m1v1f+m2v2f
b)
(m1+m2)vi=m1v1f+m2v2f 
c)
m1v1i+m2v2i=(m1+m2)vf
75.
In a physics experiment, two carts of mass 1.5 kg each are rolled towards each other.  The orange cart has a velocity of 2 m/s and the blue cart has a velocity of -1m/s.  The carts stick together when they collide.  Calculate their final speed.
a)
0.5 m/s
b)
1.0 m/s
c)
0.33 m/s
d)
0.67 m/s
76.
A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s.  The impulse on the ball is  ______ N s.
a)
-2.5
.
.
b)
-10
c)
-18
d)
-45
77.
A 5 N force is applied to a 3 kg ball to change its velocity from +9 m/s to +3 m/s.  The time for the collision is _____ seconds.
a)
1.8
.
.
b)
2.5
c)
3.6
d)
10
78.
A 40-kilogram mass is moving across a horizontal surface at 5.0 m/s.  What is the magnitude of the net force required to bring the mass to a stop in 8.0 seconds?
a)
1 N
b)
40 N
c)
25 N
d)
5 N

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