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2.5 MOMENTUM

Total questions: 80

Worksheet time: 6hrs 40mins

Name
Class
Date
1.

Momentum objek bergantung kepada ___________&_____________.

Momentum object depend on ___________&_____________.

a)

Bentuk dan saiz / shape and size

b)

Jisim dan halaju / mass and velocity

c)

Jisim dan laju / mass and speed

d)

Jisim dan tenaga / mass and energy

2.

Persamaan untuk mengira momentum ialah

Equation to calculate momentum is

a)

p=mv

b)

p=1/2mv2

c)

p=mgh

d)

p=mg

3.

Yang manakah mempunyai momentum yang lebih besar ; kereta yang berhenti atau motosikal yang bergerak dengan halaju 15 km/j?

which of the following have a bigger momentum; stop car or motorcycle move with velocity 15 km/j

a)

kereta / car

b)

motosikal / motorcycle

c)

sama / same

d)

tiada jawapan diatas / none of above

4.

Cari momentum bagi sebuah kereta yang berjisim 1000 kg bergerak dengan halaju 20m/s.

Find the momentum of a 1000 kg car moving at a velocity of 20m/s.

a)

20000 N

b)

20000 kgm/s

c)

20000 J

d)

10000 kgm/s

5.

Momentum ialah kuantiti _____________________.

Momentum is quantity _____________________.

a)

sains / science

b)

skalar / scalar

c)

vektor / vector

d)

tenaga / energy

6.

Dalam setiap perlanggaran, ___________ sentiasa malar.

In each collision, ___________ always constant.

a)

tenaga / energy

b)

jumlah halaju / total velocity

c)

jumlah laju / total speed

d)

jumlah momentum / total momentum

7.

Apabila dua objek berlanggar, Psebelum adalah ____________ Pselepas.

When two object collide, Pbefore ____________ Pafter.

a)

lebih berbanding / more than

b)

kurang berbanding / less than

c)

sama dengan / same with

d)

tidak berkaitan dengan / not related to

8.

Apabila halaju sesuatu objek dua kali ganda, momentum bagi objek tersebut ialah ___________

when the velocity of an object is double, momentum of the object will ___________

a)

tidak berubah kerana berdasarkan prinsip keabadian momentum / remain unchange based on conservation of momentum

b)

dua kali ganda / double

c)

empat kali ganda / four times more

d)

berkurang / decrease

9.

Yang manakah mempunyai momentum yang paling kecil?

Which of the following have the smallest momentum?

a)

Semut yang bergerak di atas tanah / ant that moving on the ground

b)

Semut dalam keadaan pegun / a stationary ant

c)

Gajah yang sedang berjalan / a walking elephant

d)

Gajah yang berlari / a running elephant

10.

Apakah unit SI bagi halaju?

what is the unit SI of velocity?

a)

m/s

b)

kg/s

c)

kg/m

d)

kgm/s

11.

Apakah unit SI bagi jisim?

what is the unit SI for mass?

a)

m

b)

kg/m

c)

kg

d)

g

12.

Berapakah momentum bagi sebuah troli berjisim 0.250 kg yang bergerak pada halaju 0.400 m/s?

what is the momentum of a 0.25 kg trolly move with a velocity of 0.4 m/s?

a)

0.1 kgm/s

b)

1 kgm/s

c)

10 kgm/s

d)

100 kgm/s

13.

Yang manakah BUKAN unit si bagi momentum?

which of the following is NOT the SI unit of momentum?

a)

kgm/s

b)

Ns

c)

kgm/s2

14.

Dalam perlanggaran kenyal, _______________ diabadikan.

in elastic collision, _______________ have been conserved.

a)

momentum / momentum

b)

tenaga kinetik / kinetic energy

c)

momentum dan tenaga / momentum and energy

15.

Dalam perlanggaran tidak kenyal, ___________ diabadikan.

in non elastic collision, ___________ have been conserved.

a)

momentum / momentum

b)

tenaga kinetik / kinetic energy

c)

momentum dan tenaga / momentum and energy

16.

Definisi momentum ialah ________

definition of momentum is ________

a)

hasil darab jisim objek dan halaju / product of mass and velocity

b)

saiz objek / size object

c)

halaju sesuatu objek / velocity object

17.
Determine the momentum of 1000-kg car moving southward at 20 m/s......... 
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s south
d)
10000 kg * m/s south
18.
A runner has a momentum of 720 kg m/s and is traveling at a velocity of 5 m/s. What is his mass?
a)
14.4 kg
b)
1400 kg
c)
144 kg
d)
360 kg
19.
A 2.5 kg ball moving at 4.2 m/s collides with a 2.5 kg stationary ball. If the first ball is at rest after the collision, what is the velocity of the second ball? 
a)
2.1 m/s
b)
2.5 m/s
c)
4.2 m/s
d)
8.4 m/s
20.
The total momentum before a collision is _________ the total momentum after a collision. (conservation of momentum)
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
21.

If a collision is elastic which of the following must be true?

a)

Momentum is not conserved

b)

The objects are in an open system

c)

The total momentum is equal to 0

d)

Kinetic Energy is conserved

22.
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
23.
The equation to calculate momentum is
a)
p=mv
b)
p=1/2mv2
c)
p=mgh
d)
p=mg
24.
Which of the following has the greatest momentum? 
a)
a scurrying cockroach
b)
a parked semi-truck
c)
more information is needed
25.
Momentum is a ____________________ quantity
a)
science
b)
scalar
c)
vector
d)
energy
26.
Which object listed below has the greatest momentum?
a)
A 0.05 kg object rolling at 0.2 m/s.
b)
A 0.15 kg object rolling at 2 m/s.
c)
A 0.15 kg object rolling at 1 m/s
d)
A 0.4 kg object rolling at 2 m/s.
27.
Which of the following has the least amount of momentum?
a)
An ant walking along the ground
b)
An ant at rest
c)
An elephant walking
d)
An elephant running
28.
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
29.
Determine the momentum of 1000-kg car moving northward at 20 m/s......... 
a)
20000 N
b)
20000 Joules
c)
20000 Kg * m/s
d)
20000 kg * m/s north
30.

If an object has a momentum of 40 kgm/s and a mass of 60 kg, what is it's velocity?

a)

2400 m/s

b)

1.5 m/s

c)

240 m/s

d)

.67 m/s

31.

If an object has a velocity of 15 m/s and a momentum of 30 kg m/s, what is its mass?

a)

450 m/s

b)

2 m/s

c)

4,500 m/s

d)

.5 m/s

32.

If an object has a mass of 20 000 g and a velocity of 4 m/s, what is the momentum of the object?

a)

80 kgm/s

b)

4 kgm/s

c)

5 kgm/s

d)

.2 kgm/s

33.

An object has a mass of 5 kg, a displacement of 5 m, and a time of 25 s, what is its momentum?

a)

1 kgm/s

b)

750 kgm/s

c)

25 kgm/s

d)

625 kgm/s

34.

An object has a mass of 8 kg, a displacement of 1000 cm, and a time of 40 s, what is its momentum?

a)

320 kgm/s

b)

.5 kgm/s

c)

3,200 kgm/s

d)

2 kgm/s

35.
An object with a mass of 2000 kg at rest has what momentum?
a)
2000 kg m/sec
b)
0 kg m/sec
c)
2000 kg
d)
2000 m/sec
36.

A car is of mass 15kg is travelling east at a velocity of 3m/s. the value of its momentum is:

a)

30kg.m.s-1

b)

45kg.m.s-1

c)

18kg.m.s-1

d)

5kg.m.s-1

37.
A 2 kg cart has a momentum of 10 kg m/s. What is its velocity?
a)
22 m/s
b)
.2 m/s
c)
5.0 m/s
d)
20 m/s
38.

If an object has a mass of 20 kg and a velocity of 1 440 000 cm/h , what is the momentum of the object?

a)

80 kgm/s

b)

4 kgm/s

c)

5 kgm/s

d)

.2 kgm/s

39.

An object has a mass of 8 kg, a displacement of 10 m, and a time of 2/3 minutes, what is its momentum?

a)

320 kgm/s

b)

.5 kgm/s

c)

3,200 kgm/s

d)

2 kgm/s

40.

What physical quantity of the brick is constant while it is falling?

Apakah kuantiti fizik bata itu yang malar semasa bata itu jatuh?

a)

TENAGA KEUPAYAAN

b)

TENAGA KINETIK

c)

PECUTAN

d)

HALAJU

41.
What is the momentum of a charging rhino?
a)
2 × 10² kg⋅m/s
b)
3 × 10² kg⋅m/s
c)
2 × 10⁴ kg⋅m/s
d)
3 × 10⁴ kg⋅m/s
42.
Which object has the greatest momentum?
a)
Object A
b)
Object B
c)
Object C
d)
cannot be determined
43.

Find the momentum of a 3.0 kg mass when it is stopped.

a)

0 kg*m/s

b)

need to know the velocity

c)

3.0 kg*m/s

d)

9.8 kg * m/s

44.
Which of the following correctly explains why less force is required to stop a person using an airbag?
a)
hitting the airbag decreases the person's momentum
b)
the airbag changes the person's momentum over a longer time interval
c)
the airbag is very soft, like a pillow
d)
decreasing the time of the impact decreases the force of the impact
45.

a bat strikes a 0.05 kg baseball so that its velocity changes by +30 m/s in 0.1 s. With what average force was the ball struck?

a)

+15 N

b)

-15 N

c)

+300 N

d)

-300 N

e)

+150 N

46.
The impulse is ______ the change in momentum
a)
greater than
b)
equal to
c)
less than
d)
always double
47.

At what speed do the two blocks move after the collision?

a)

2 m/s

b)

5 m/s

c)

10 m/s

48.
When two objects collide, the Momentumbefore is ____________ the Momentumafter.
a)
more than 
b)
less than 
c)
equal to
d)
unrelated to
49.
Sally runs and jumps off of a diving board and lands on a tube (she stays in the tube).  The collision between Sally and the tube is
a)
Elastic
b)
Inelastic
c)
Perfectly Inelastic
d)
Completely absurd
50.
Two objects of the same mass collide with each other.  The second object is at rest and the first is moving at 5 m/s North before the collision.  After the collision, the first mass is at rest and the second mass continues at 5 m/s North. 
The type of collision represented by these two masses is
a)
Inelastic
b)
Completely Inelastic
c)
Elastic
51.
Bob is moving at a velocity of 3 m/s South when he jumps into a sled that is at rest. The quantities that are conserved during this collision include:
a)
Kinetic Energy only
b)
Momentum only
c)
Momentum and kinetic energy
52.
Shaniqua noticed a collision outside the coffee shop where two cars collided and stuck together.  What type of collision did she observe?
a)
Elastic
b)
Inelastic
c)
Completely inelastic
53.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
54.
The law of conservation of momentum states that the total momentum of all objects interacting with each other will  ________________________ no matter of the nature of the forces between the object.
a)
increase
b)
decrease
c)
remain constant
d)
fluctuate
55.
What is the property of a moving object that causes it to keep moving?
a)
Momentum
b)
Acceleration
c)
Speed
d)
resistance
56.
What is Newton's Law of Conservation of Momentum?
a)
Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
b)
Force = mass x acceleration
c)
For every action there is an equal and opposite reaction
d)
Momentum can not be created or destroyed without outside forces
57.
True/False:  The momentum does not change unless outside forces act on the objects.
a)
True
b)
False
58.
True/False:  Inelastic Collision causes a rebound.
a)
True
b)
False
59.
True/False:  Elastic Collision causes a rebound.
a)
True
b)
False
60.
The momentum of an object depends upon the object's ___________&_____________.  
a)
size and shape
b)
mass and veloctiy
c)
mass and energy
61.

kinetic energy is conserved in what type of collision?

a)

elastic

b)

inelastic

c)

both elastic and inelastic

d)

neither elastic or inelastic

62.

What are the units for velocity?

a)

m/s

b)

kg

c)

kg*m/s

d)

none of these

63.

In order for an object to have momentum it must be ________

a)

moving

b)

motionless

c)

alive

d)

asleep

64.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
65.
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
66.
This picture is an example of ____________
a)
Elastic Collision
b)
Inelastic collision
67.

Which of the following has the greatest momentum?

a)

a scurrying cockroach

b)

a parked semi-truck

c)

more information is needed

68.

If a momentum car is moving at 2 kg m/s and crashes into a stationary momentum car, how much momentum would transfer over to the stationary car?

a)

all of the momentum

b)

half of the momentum

c)

a little bit of the momentum

d)

zero momentum

69.
Compared to a sports car moving at 30 miles per hour, the same sports car moving at 60 miles per hour has 
a)
twice as much momentum
b)
four times as much momentum
c)
the same momentum.
d)
Half the momentum
70.
The momentum change of an object is equal to the 
a)
velocity change of the object
b)
force acting on it
c)
force acting on it times its velocity
d)
impulse acting on it
71.
The reason padded dashboards are used in cars is that they 
a)
decrease the impulse in a collision.
b)
increase the time of impact in a collision.
c)
increase the force of impact in a collision.
d)
decrease the momentum of a collision
72.
A table tennis ball launcher is fired. Compared to the impulse on the ball, the impulse on the launcher is 
a)
smaller
b)
larger
c)
the same
73.
A collision is considered elastic if 
a)
there is no lasting deformation
b)
the objects don’t stick together.
c)
the objects that collide don't get warmer.
d)
All answers are correct
74.

In an elastic collision, ______ is conserved.

a)

Momentum only

b)

Kinetic Energy only

c)

Both momentum and energy

75.

A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball.

a)

55 kgm/s

b)

100 kgm/s

c)

250 kgm/s

d)

500 kgm/s

76.

Two football players with mass 75 kg and 100 kg run directly toward each other with speeds of 6 m/s and 8 m/s respectively. If they grab each other as they collide, which equation correctly enforces the principle of conservation of momentum to determine the combined speed of the two players just after the collision?

a)

mv = m1v1' + m2v2'

b)

m1v1 + m2v2 = m1v1' + m2v2'

c)

m1v1 + m2v2 = mv'

d)

m1v1 + m2v2 = m1v1 + m2v2

77.
The total momentum before a collision is _________ the total momentum after a collision.
a)
equal to 
b)
less than 
c)
more than
d)
It depends on the type of collision
78.
A 2.5 kg ball moving at 5 m/s collides with a 2.5 kg stationary ball in a perfectly elastic collision.  What is the velocity of the second ball after the collision? 
a)
5 m/s
b)
2.5 m/s
c)
10 m/s
d)
7.5 m/s
79.

A bowling ball has 9 kg m/s of momentum when it is rolled 6 m/s. What is the mass of the bowling ball?

a)

54kg

b)

15kg

c)

3kg

d)

1.5kg

80.
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

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