Momentum and Its
Conservation
Review
Momentum is a ___ quantity. 10
1. scalar
2. vector
0%
0%
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
Momentum can be calculated by
multiplying mass by
1.
2.
3.
4.
0%
0%
0%
0%
1
2
3
4
21
22
23
24
Acceleration
Velocity
Impulse
Time
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
If no net force acts on a body
1. The velocity of the body in
constant
2. The body is accelerating
3. The momentum of the body is
zero
4. The momentum of the body is
increasing
0%
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
The greatest change in momentum
will be produced by
1. A large force acting over a long
time
2. A small force acting over a short
time
3. A large force acting over a short
time
4. A small force acting over a long
time
0%
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
If an object with a velocity of 50 m/s has the same
momentum as that of a 10 kg mass having a
velocity of 20 m/s, the mass of the object is
1. Greater than 10 kg
2. Less than 10 kg
3. 10 kg
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
Impulse can be represented by
1.
2.
3.
4.
0%
0%
0%
0%
1
2
3
4
21
22
23
24
Δv/ Δt
F Δt
Mv
None of these
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
When a golfer hits a golf ball, the force
exerted by the ball on the club is ___ that
exerted by the club on the ball.
1. Equal to
2. Greater than
3. Less than
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
When a golf club hits a golf ball, the change in
momentum of the ball is ___ the change in
momentum of the club.
1. Equal to
2. Greater than
3. Less than
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
When a golf club hits a golf ball, the change
in velocity of the ball is ___ that of the club.
1. Equal to
2. Greater than
3. Less than
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
If an object moving at a rate of 20 m/s collides with a
stationary object and the two objects move away together,
the velocity of the combined objects will be
1. Greater than 20 m/s
2. Less than 20 m/s
3. 20 m/s
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
The collision described in the previous question
would be classified as an ____ collision.
1. Elastic
2. Inelastic
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
Two moving objects collide and move apart on paths that
are 120o apart. The total momentum of the objects after
the collision is ___ the total momentum before the collision.
1. Equal to
2. Greater than
3. Less than
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
If the momentum of an object changes
and its mass remains constant,
1.
2.
3.
4.
5.
0%
0%
0%
0%
0%
1
2
3
4
21
22
23
24
Its velocity is changing
It is accelerating
There is a force acting on it
All of the above
None of the above
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
The reason that crumple zones are
used in cars is that they
1. Increase the force of impact in a
collision
2. Decrease the momentum of a
collision
3. Decrease the impulse in a
collision
4. Increase the time of impact in a
collision
0%
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
Which has the greater momentum: a 145 g
baseball traveling at 40.0 m/s or a 45 g golf ball
traveling at 67.0 m/s?
1. The baseball
2. The golf ball
3. Both have the same momentum
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
What impulse is needed to stop a
45 g mass traveling at 42 m/s?
1.
2.
3.
4.
0%
0%
0%
0%
1
2
3
4
21
22
23
24
1.9 N.s
3.0 N.s
190 N.s
1900 N.s
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
A force of 500 N is used to stop an object with a
mass of 50 kg moving at 2 m/s. How long will it
take to bring the object to a full stop?
1.
2.
3.
4.
0%
0%
0%
0%
1
2
3
4
21
22
23
24
0.50
0.10
0.15
0.20
5
6
seconds
seconds
seconds
seconds
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
Which type of collisions obey the
law of conservation of momentum?
1.
2.
3.
4.
0%
0%
0%
0%
1
2
3
4
21
22
23
24
Elastic
Inelastic
Both elastic and inelastic
Neither elastic nor inelastic
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
Which of the following is NOT a
vector quantity?
1.
2.
3.
4.
0%
0%
0%
0%
1
2
3
4
21
22
23
24
Acceleration
Force
Momentum
Time
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
An egg is thrown against a wall. A second egg of equal
mass is thrown with the same velocity at a sheet. Which
egg experiences the greater impulse?
10
1. The egg thrown at the wall.
2. The egg thrown at the sheet.
3. Both experience the same
impulse.
0%
0%
0%
1
2
3
4
5
6
7
8
9
10
21
22
23
24
25
26
27
28
29
30
11
12
13
14
15
16
17
18
19
20
A system is said to be closed if
1. No external force acts on it
2. The momentum of each object in
the system remains the same
3. Objects cannot enter or leave
the system
4. Objects can enter but not leave
the system
0%
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
10
19
20
An internal force ___ the total
momentum of a system.
1. Increases
2. Decreases
3. Does not change
0%
0%
0%
1
2
3
4
21
22
23
24
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20