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3rd MP Composite Quiz

Total questions: 30

Worksheet time: 1hrs 4mins

Name
Class
Date
1.
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 velocity than Skater 2
d)
Skater 1 experiences a greater force
2.

The Law of Conservation of Momentum states:

a)

The total momentum before a collision is equal to the total momentum after a collision.

b)

The total momentum before a collision is greater than the total momentum after a collision.

c)

The total momentum before a collision is less than the total momentum after a collision.

d)

The total momentum before a collision is not related to the total momentum after a collision.

3.
Before the canon fires a cannon ball, both sit at rest. A person can confidently say the total momentum is...
a)
zero
b)
non-zero
4.

Conservation of momentum follows from

a)

Newton’s first law

b)

Newton’s second law

c)

Newton’s third law

d)

the law of conservation of energy

5.
In this type of collision, objects tend to "stick" together.
a)
elastic
b)
inelastic 
c)
They "stick" together in both types of collisions
6.

Select the best equation that would help solve the problem:

Ball A and Ball B have the same mass. Ball A rolls and collides with Ball B at rest. Ball A rolls with some velocity after the collision, what is the velocity of Ball B?

a)

Δp = mv

b)

p = mv

c)

(before) mAvA + mBvB = mAvA + mBvB (after)

d)

(before) mAvA + mBvB = (mA + mB)v (after)

7.

Select the best equation that would help solve the problem:

An arrow collides and sticks with a target that is hanging on a string with negligible mass. To find the velocity of the arrow and target after the collision.

a)

Δp = mv

b)

p = mv

c)

(before) mAvA + mBvB = mAvA + mBvB (after)

d)

(before) mAvA + mBvB = (mA + mB)v (after)

8.

A boy kicks a football with a force of 20 N, the time the force acts for is 0.3 s. Calculate the impulse on the ball.

a)

1 N⋅s

b)

6 N⋅s

c)

33.3 N⋅s

d)

66.6 N⋅s

9.

A force acted upon an object as shown in the graph above. What is the magnitude of the impulse on the object in the first 3 second?

a)

18 N*s

b)

4.5 N*s

c)

6 N*s

d)

9 N*s

10.

When a large football player and a small football player run into each other, who exerts more force?

a)

The heavy one

b)

The light one

c)

They are equal

d)

there is no such thing as force

11.

Bobby lifts a book to the second floor in 20 seconds. Carol lifts the same book to the second floor in 10 seconds. Who used more power?

a)

Bobby

b)

Carol

c)

They did the same amount of work

d)

Not enough information

12.

How far does a car that weighs 5,000 N go if 18,000 J of work is done on it?

a)

3.8 m

b)

3.7 m

c)

3.2 m

d)

3.6 m

13.
A person applies a force to a wall. 
a)
  Work is done because the person uses energy when applying the force  
b)
Work is done because the wall heats up at the place where the force is applied  
c)
No work is done
14.

Which point has the most KE? Which point has the most GPE?

a)

Ball G and B

b)

Ball A and D

c)

Ball B and A

d)

Ball D and A

e)

Ball A and D

15.
When a pendulum swings, at which point is potential energy at its greatest
a)
1
b)
2
c)
3
d)
4
16.
When a pendulum swings, at which point is kinetic energy highest?
a)
1
b)
2
c)
3
d)
4
17.
Which situation is work not done?
a)
lifting a 20 pound box off the floor
b)
holding a 20 pound box above the floor
c)
sliding a 20 pound box across the floor
d)
sliding a 20 pound box up an inclined plane
18.

If the velocity triple, what will happen to the KE?

a)

decreasing by a factor of 3

b)

increasing by a factor of 3

c)

decreasing by a factor of 9

d)

increasing by a factor of 9

19.

A car that has a mass of 1500kg has 9545J of kinetic energy. How fast is the car moving?

a)

3.6m/s

b)

6.4m/s

c)

14,319,000 m/s

d)

None of the above

20.
A battery converts what type of energy to another?
a)
sound to kinetic
b)
light to heat
c)
mechanical to electrical
d)
chemical to electrical
21.
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 
22.

A skydiver jumps from a plane and is halfway through her descent. At this point in time she has...

a)

More Kinetic Energy

b)

More Gravitational Potential Energy

c)

Both Kinetic and Gravitational Potential Energy are Equal

d)

She has no energy

e)

Less Kinetic Energy

23.
What does it mean when the electric field lines are close together?
a)
the field is positive
b)
the field is negative
c)
The field is strong
d)
the field is weak
24.
The law of conservation of charge states that...
a)
all atoms have more protons than electrons
b)
only protons can be rubbed off of an atom
c)
charge cannot be created or destroyed
d)
charge cannot be transferred 
25.

When an object gains electrons it becomes __________.

a)

Neutral

b)

Positively charged

c)

Negatively charged

26.

When the object is neutral ?

a)

numbers of electrons and protons are the same

b)

has more electrons than protons

c)

has more protons than electrons

d)

not enough information

27.
What happens to the force between two charged objects if you reduce the distance between two objects from 30 cm to 10 cm?
a)
1/3X
b)
20X
c)
3X
d)
9X
28.

which is the field for opposite charges

a)
b)
c)
d)
29.
QA and QB are two charges creating an electric field. Based on the electric field lines, we can conclude
a)
QA and QB are both positive
b)
QA and QB are both negative
c)
QA is positive and QB is negative
d)
QA is negative and QB is positive
30.
What is the unit of electric charge?
a)
Volts
b)
Amps
c)
Coulombs
d)
Ohms

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