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Moments and Momentum Revision Quiz

Total questions: 91

Worksheet time: 2hrs 11mins

Name
Class
Date
1.

Which of the following has the greatest momentum?

a)

0.05 kg mass moving at 200 m/s

b)

10.0 kg mass moving at 30 m/s

c)

200 kg mass moving at 2 m/s

d)

3000 kg mass moving at 0.2 m/s

2.

A 50,000­kg train car moving at 2 m/s collides and connects to another identical car initially at rest.

What is the momentum of the train car before the collision?

a)

25,000 kg x m/s

b)

100,000 kg x m/s

c)

.00004 kg x m/s

d)

100 kg x m/s

3.

An object with mass will have momentum.

True or False?

a)

True

b)

False

4.

When the speed of an object is tripled, its momentum...

a)

decreases.

b)

doubles.

c)

remains unchanged in accord with the conservation of momentum.

d)

triples.

5.

What is the unit for momentum?

a)

kg/m

b)

kg/s

c)

kg x m/s

d)

m/s

6.

1.      A 12.7 kg tire is pushed over a hill, and at the bottom of the hill its velocity is 25 m/s. What is the momentum of the tire at the bottom of the hill?

a)

.51 kg x m/s

b)

317.5 kg x m/s

c)

1.97 kg x m/s

d)

317. kg

7.

A car has a momentum of 162 kg x m/s and is traveling at a velocity of 22 m/s. What is the mass of the car?

a)

22 jg

b)

162 kg

c)

3564 kg

d)

7.36 kg

8.

A bowling ball that weighs 5 kg hits the pins with a momentum of 120 kg x m/s. What is the velocity of the bowling ball?

a)

24 kg x m/s

b)

24 m/s

c)

600 m/s

d)

0.042 m/s

9.

Multiply:

(4 x 105)(5 x 10-3)

a)

20 x 102

b)

20 x 10-8

c)

2 x 103

d)

2 x 10

10.

What is the SI unit for distance and displacement?

a)

Second

b)

Meter

c)

Kilogram

d)

Candela

11.

What describes a vector best?

a)

Magnitude

b)

Magnitude and unit

c)

Magnitude, unit, and direction

d)

Direction

12.
If a boomerang is thrown 20 m in a straight line and returns exactly to the spot it was thrown what is its displacement?
a)
20m
b)
40m
c)
0m
d)
-20m
13.
Displacement
a)
Vector
b)
Scalar
14.
Length
a)
Vector
b)
Scalar
15.
Distance
a)
Vector
b)
Scalar
16.
30 m/sec, East. Scalar or Vector
a)
Scalar
b)
Vector
c)
Neither
17.

Wind blowing at 20 mph. Vector or scalar?

a)

Scalar

b)

Vector

18.

What is the SI unit for distance and displacement?

a)

Second

b)

Meter

c)

Kilogram

d)

Candela

19.

A boy walks 25.0 m East and the 25.0 m West back to his house. His displacement is ________________m.

a)

50 m

b)

30 m

c)

0 m

d)

36 m

20.

A boy walks 15.0 m north to school and then 15.0 m south back to his house. His total distance is _________________m.

a)

30 m

b)

15 m

c)

0 m

d)

90 m

21.
A value that only has magnitude (a number)
a)
Scalar
b)
Vector
c)
Speed
d)
Velocity
22.

Define acceleration

a)

ratio of velocity to time

b)

rate of change in displacement

c)

rate of change in velocity

d)

ratio of force to mass

23.

The mass of 100 paper clips is measured at 52.3 grams. The mass of a single paper clip from this group would be closest to

a)

523 g

b)

5.23 g

c)

0.523 g

d)

0.0523 g

24.

What is the approximate width of a person's little finger?

a)

1 m

b)

0.1 m

c)

0.01 m

d)

0.001 m

25.

Convert 100cm to meters

a)

1 m

b)

10 m

c)

0.1 m

d)

0.01 m

26.

Name this piece of Physics equipment

a)

Spring meter

b)

Newton meter

c)

Einstein logger

d)

Galileo's Ruler

27.

Which unit measures weight?

a)

Newtons

b)

Kilograms

c)

Grams

d)

Metres

28.

Which of the following units is used to measure volume?

a)

g

b)

N

c)

cm3

d)

m/s

29.

Convert 1034 grams to kilograms

(a)  

30.

What is 6.7 × 104 written

as an ordinary number?

a)

67000

b)

6700

c)

670000

d)

0.00067

31.

What is 3 × 10-2 written

as an ordinary number?

a)

300

b)

3000

c)

0.03

d)

0.3

32.

How would you write 1.35 x 10-4 as a decimal?

(a)  

33.

A moment is...

a)

a force measured in Newtons

b)

a turning force measured in newton metres

c)

a distance measured in metres

d)

a time intervals measured in clicks

34.

To calculate a turning effect of a spanner the force is multiplied by the length of the spanner

a)

always - if the length of the spanner is equal to the distance from the fulcrum to the applied force

b)

never - the length must be equal to the distance from the pivot to the fulcrum

c)

if the length of the spanner is equal to the parallel distance from the pivot to the applied force

d)

if the length of the spanner is equal to the perpendicular distance from the pivot to the applied force

35.

Moment (Nm) =

a)

Force (N) x distance (m)

b)

Angular Force (N°) x distance (m)

c)

Work done (J)

d)

Force (N) x distance (s)

36.
We use levers to make work easier.?
a)
True
b)
False
37.
What is the anticlockwise moment acting on this crane?
a)
80,000Nm
b)
100,000Nm
c)
120,000Nm
d)
140,000Nm
38.
Unit of force.
a)
Meter
b)
Centimeter
c)
Newton
39.
What is the moment produced by the 15 N?
a)
15 Nm (clockwise)
b)
150 Nm (anti - clockwise)
c)
1.5 Nm (anti - clockwise)
d)
0.15 Nm (clockwise)
40.
The easiest way to open a heavy door  is by applying the force
a)
Near the hinges
b)
In the middle of the door
c)
At the edge of the door far from the hinges
d)
At the top of the door
41.

A wrench is used to tighten a nut. A 15N perpendicular force is applied 50cm away from the axis of rotation, and moves a distance of 10 cm as it turns. What is the turning force applied to the wrench?

a)

7.5 Nm

b)

1.5 Nm

c)

750 Nm

d)

150 Nm

42.

What to we call forces applied to anything that turns?

a)

Minute

b)

Moment

c)

Minimum

d)

Monument

43.

What is the size of the moment shown by the black arrow?

a)

30 Nm

b)

36 Nm

c)

40 Nm

d)

60 Nm

44.

What are the units for Moment?

a)

N

b)

kgm/s

c)

kN

d)

Nm

45.

Work Done is the amount of ________ transferred

a)

Energy

b)

Force

c)

Distance

d)

Data

46.

Work is done when a force makes an object ______

a)

move

b)

heat up

c)

light up

d)

turn on

47.

Finish the equation


Work Done = _______ x ________

a)

Force, Distance

b)

Force, Temperature

c)

Distance, Energy

d)

Energy, Force

48.

Dani pushes a box along a carpeted floor for 12 metres The force of friction is 100N. How much work did Dani do against friction?

a)

1200J

b)

0.12J

c)

8.33J

49.

What is the unit of Work?

a)

Joules (J)

b)

Watts (W)

c)

Kelvin (K)

d)

Minutes (min)

50.

What is the definition of a Pivot? (sometimes called a fulcrum)

a)

A Fixed point about which a lever turns

b)

The force provided by the lever

c)

The force YOU apply to the lever

51.

What is the definition of a Load?

a)

A Fixed point about which a lever turns

b)

The force provided by the lever

c)

The force YOU apply to the lever

52.

What is a moment?

a)

A turning force

b)

A point about which a lever turns

c)

A force multiplier

d)

None of the above

53.

To work out a moment you multiply the force and the...

a)

distance from the pivot

b)

distance to the edge

c)

work done

d)

mass of the object

54.

Ani exerts a force of 6 Newtons onto a spanner 10 centimetres long. What is the moment?

a)

0.6Nm

b)

60Nm

c)

1.67Nm

d)

0.0167Nm

55.

Charlie needs to create a moment of 100Nm to open his door. They pushes 0.5m away from the pivot. How much force must they exert?

a)

200N

b)

50N

c)

0.05N

56.

Ani and Charlie are sitting at opposite ends of a see-saw. Ani has a weight of 500N and Charlie has a weight of 450N.


If Ani is 1.8 metres from the fulcrum, how far away must Charlie sit to make the see-saw balance?

a)

2 metres

b)

1 metre

c)

1.5 metres

d)

0.5 metres

57.

Which of these statements is TRUE?

a)

For a see-saw to balance the moments must be equal

b)

For a see-saw to balance the forces must be equal

c)

For a see-saw to balance the distances must be equal

58.

The anticlockwise moment is...

a)

The sum of all the moments that will turn a lever anticlockwise

b)

The sum of all the moments that will turn a lever clockwise

c)

Equal to the force of gravity

d)

The sum of all the moments

59.

Why is it important that Tower Cranes have adjustable distances on their counterweights?

a)

Adjusting the distance allows to the moment to be changed so it can pick up different loads

b)

Variety is the spice of life, having it in once place would be boring

c)

To make it easier to move the crane

d)

So that the moment remains the same at all times

60.
Unit of force.
a)
Meter
b)
Centimeter
c)
Newton
61.

There are two types of moments which are clockwise and anticlockwise moments

a)

True

b)

False

62.

Identify the pivot

a)

Spanner

b)

Nut

c)

Hand

d)

The Sun

63.
A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?
a)
The larger person moving further away from the center.
b)
Moving the smaller person closer to the center.
c)
Moving the smaller person further from the center.
d)
Making the larger person do nothing.
64.

What are the units for a moment?

a)

N

b)

m

c)

Nm

d)

N/m

65.

What is the moment for this situation?

a)

5Nm

b)

6Nm

c)

50Nm

d)

25Nm

66.

What is the moment for this situation?

a)

25Nm

b)

2.5Nm

c)

5Nm

d)

0.25Nm

67.

Find moment at A

a)

24 kNm

b)

240000 Nm

c)

16 kNm

d)

29000 Nm

68.

What is the principle of moments?

a)

For a balanced object

Clockwise moment = Anticlockwise moment

b)

I don't know, something physicsy I guess...

c)

For a balanced object the clockwise moments are larger

d)

All moments add up to 180

69.

Is this balanced?

a)

Yes

b)

No

70.

What is the missing force?

a)

30Nm

b)

40Nm

c)

3Nm

d)

0.4Nm

71.

What is the missing number?

a)

4.8Nm

b)

5Nm

c)

48Nm

d)

0.8Nm

72.

What is the missing number?

a)

466.67Nm

b)

500Nm

c)

350Nm

d)

Monkey?

73.

What force slows objects down and keeps them from moving?

a)

Acceleration

b)

Gravity

c)

Friction

d)

Net Force

74.

Which one of Newton's laws are displayed

a)

2nd law

b)

1st law

c)

3rd law

75.

An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an outside force. Which law does this describe

a)

2nd law

b)

1st law

c)

3rd law

76.

This is Newton's 3rd law

a)

True

b)

False

77.

When there is a change in motion?

a)

When forces are balanced

b)

When the forces are unbalanced

c)

Whe forces are equal

d)

Never

78.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and speed
c)
mass and veloctiy
d)
mass and energy
79.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
80.
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
a)
car
b)
bike
c)
they are equal
d)
cannot determine using the info provided
81.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
82.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
83.
When two objects collide, the Pbefore is ____________ the Pafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
84.
What is the unit for mass?
a)
m/sec
b)
kg/sec
c)
kg
d)
kg m/sec
85.
What is the unit for velocity?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
86.
What is the unit for momentum?
a)
m/sec
b)
kg/sec
c)
kg/m
d)
kg m/sec
87.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 
a)
55 kg*m/s
b)
100 kg*m/s
c)
250 kg*m/s
d)
500 kg*m/s
88.
What happens to the speed of the wagon as the rain collects inside of it?
a)
it decreases
b)
it remains constant
c)
it increases
89.

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...

a)

Skater 1 experiences a greater change in momentum

b)

Skater 2 experiences a greater change in momentum

c)

Skater 1 has a greater speed than Skater 2

d)

Skater 1 experiences a greater force

90.
Parkour Peter bends his knees upon landing in order to ____
a)
reduce his change in momentum
b)
increase his change in momentum
c)
increasing his landing time
d)
increasing his landing force
91.
Both students experience the same ____
a)
force of impact
b)
time of impact
c)
change in momentum
d)
all of the above

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