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Review of MYP 5 Physics

Total questions: 61

Worksheet time: 2hrs 35mins

Name
Class
Date
1.
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
2.
A runner has a momentum of 670 kg m/s and is travelling at a velocity of 9 m/s. What is his mass?
a)
6030 kg
b)
0.0134 kg
c)
74.4 kg
d)
80 kg
3.
The units for Impulse are
a)
N/s
b)
N.s
c)
N
d)
m/s
4.
Cart A is pulled with a 2 Newton force for 2 seconds, and Cart B is pulled with a 1 Newton force for 3 seconds.  Which cart experiences the greatest impulse?
a)
Cart B
b)
Cart A
c)
they are the same
5.
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)
66 N.s 
d)
None of these
6.
A constant force of 4.5 N acts on a 7.2-kg object for 10.0 s. What is the     change in the object's velocity? 
a)
6.3 m/s
b)
3.2 m/s
c)
1.2 m/s 
d)
4.33 m/s
7.
If an air bag changes a 60 kg person's speed from 40.0 m/s to     0.0 m/s, what impulse must act on the person? 
a)
 2400 kg.m/s
b)
1.5 kg.m/s
c)
0.67 kg.m/s
d)
1500 kg.m/s
8.

can a bullet have the same momentum as a truck?

a)

yes

b)

no

9.
Which takes more force  to catch, a bowling ball or a ping pong ball?
a)
bowling ball because it has more momentum
b)
ping pong ball because it has more momentum
c)
both require the same amount of force when catching
d)
bowling ball because it has less momentum
10.
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
11.

Objects on Mars weigh approximately 38% less than they do on earth. Will a 10 kg bowling ball moving at 5 m/s have more momentum on Earth or Mars?

a)

Earth

b)

Mars

c)

Same

12.

When comparing the momentum of 2 moving objects, which of the following is correct?

a)

the object with the higher velocity will have less momentum if the masses are equal

b)

the more massive object will have less momentum if its velocity is greater.

c)

the less massive object will have less momentum if the velocities are the same

d)

the more massive object will have less momentum if the velocities are the same

13.

If the impulse acting on two objects is the same then

a)

the mass of both objects is the same

b)

the change in velocity of both objects is the same

c)

the change in momentum of both objects is the same

d)

the amount of contact time is the same

e)

the force exerted on both objects is the same

14.
What does one newton exerted over a distance of one meter equal?
a)
One watt
b)
One hertz
c)
One volt 
d)
One joule 
15.
You do 90 joules of work in 30 seconds. How much power have you generated?
a)
30 watts
b)
3 watts
c)
120 watts
d)
270 watts
16.
You move an 8-newton weight five meters in 4 seconds. How much power have you generated?
a)
160 watts
b)
10 watts
c)
6.4 watts
d)
17 watts
17.

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

18.
The amount of work done in a certain amount of time is known as 
a)
work
b)
effort force
c)
resistance force 
d)
power
19.

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

20.

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

21.
The unit of power is the...
a)
work
b)
watt
22.
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 
23.

The ability to do work or cause change:

a)

work

b)

energy

c)

momentum

d)

power

24.

Energy in the form of motion.

a)

mechanical energy

b)

potential energy

c)

kinetic energy

d)

momentum

25.

Stored energy in the form of position or condition.

a)

potential energy

b)

kinetic energy

c)

momentum

d)

mechanical energy

26.

If Ronnie is driving a truck with a velocity of 40m/s and the truck has a mass of 1120kg then the truck has __________ energy in the amount of _________.

a)

POTENTIAL ENERGY in the amount of 439,040 J

b)

POTENTIAL ENERGY in the amount of 896,000 J

c)

KINETIC ENERGY in the amount of 439,040 J

d)

KINETIC ENERGY in the amount of 896,000 J

27.

A 75kg refrigerator is located on the 70th floor of a skyscraper (300 Meters above the ground). What is it's potential energy?

a)

220,500 J

b)

225,000 J

c)

375 J

d)

39.2 J

28.

A light plastic cart and a heavy steel cart are both pushed with the same force for a distance of 1.0 m, starting from rest. After the force is removed, the kinetic energy of the light plastic cart is ________ that of the heavy steel cart.

a)

greater than

b)

equal to

c)

less than

d)

can't say unless we know how big the force is

29.

Which requires more work – a person walking up stairs or a person running up stairs?

a)

walking

b)

running

c)

they require equal work

d)

no work is required for either because the movement is vertical

30.

Which requires more power – a person walking up stairs or a person running up stairs?

a)

walking

b)

running

c)

they require equal power output

d)

no power is required at all

31.

If a charging elephant has kinetic energy, it must also have

a)

potential energy

b)

momentum

c)

work

d)

all of these

32.

If Ronnie is driving a 1120kg truck. He starts at 0hm/s and accelerates to a velocity of 40m/s in 1 minute. What is the power output of the engine?

a)

14,933J

b)

14,933 W

c)

439,040 W

d)

896,000 W

33.

Flash is the most POWERful hero because...

a)

He can do the most in the least amount of time.

b)

He can do the most.

c)

He can move the fastest.

d)

He isn't.

34.

Total energy = 200J
Useful energy = 20J

Workout the efficiency of this lightbulb.
 efficiency = useful enegytotal energy in ×100efficiency\ =\ \frac{useful\ enegy}{total\ energy\ in}\ \times100  

a)

100%

b)

80%

c)

40%

d)

10%

35.

A water pump can move 100kg of water to a height of 50m in 7 seconds. The pump draws 10kW of power from the grid. Determine the efficiency of the pump.

a)

1.42%

b)

70%

c)

0.07%

d)

100%

36.
Jorge noticed a collision outside the coffee shop where two cars collided and stuck together.  What type of collision did he observe?
a)
Elastic
b)
Inelastic
c)
Completely inelastic
d)
none
37.
While playing pool, Emma notices that the pool balls bounce apart.  What type of collision is this?
a)
Elastic
b)
Inelastic
c)
Explosive
d)
Force
38.

A large moving ball collides with a small stationary ball. The momentum

a)

of the large ball decreases, and the momentum of the small ball increases.

b)

of the small ball decreases, and the momentum of the large ball increases.

c)

of the large ball decreases, and the momentum of the small ball decreases.

d)

does not change for either ball.

39.
The purpose of crumble zones on a car is to
a)
decrease time of impact.
b)
increase force of impact.
c)
increase the time of impact.
d)
decrease the impulse during impact.
40.
The impulse-momentum theorem states that
a)
the impulse on an object is equal to the change in momentum it causes 
b)
the force on a moving object is equal to the magnitude of the impulse.
c)
the impulse on an object is greater than the change in momentum it causes 
d)
the impulse on an object is less than the change in momentum it causes
41.
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
42.
While playing pool, the white cue ball strikes the 8 ball. Before the collision, the cue ball's velocity was 10 m/s and the 8 ball was at rest. If both ball's have a mass of 0.15 kg and the cue ball's velocity after the collision is 2 m/s, what is the 8 ball's velocity?
a)
2 m/s
b)
8 m/s
c)
-2 m/s
d)
1.5 m/s
43.
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
44.
a)

Elastic collisions

b)

Inelastic collisions

45.
a)

v=20ms−1v=20ms^{-1}

b)

v=11ms−1v=11ms^{-1}

c)

v=10ms−1v=10ms^{-1}

d)

v=24ms−1v=24ms^{-1}

46.
Which is true about the total kinetic energy during an inelastic collision?
a)
KE is conserved.  No external KE is gained.  No KE is lost.
b)
The total KE before the collision is greater than the total KE after the collision.
c)
The total KE after the collision is greater than the total KE before the collision.
d)
The total KE before the collision is zero.  The total KE after the collision is zero.
47.
Object 1 and Object 2 will have an elastic collision.  What is the total momentum of the system before the collision?
a)
10 kg⋅m/s
b)
-10 kg⋅m/s
c)
0.0 kg⋅m/s
d)
-110 kg⋅m/s
48.
Object 1 and Object 2 will have an elastic collision. The momentum of Object 1 after the collision is -56.7 kg⋅m/s.  What is Object 1's velocity after the collision?
a)
-5.67 m/s
b)
5.67 m/s
c)
-6.70 m/s
d)
-1.13 m/s
49.

A basketball of 1.5kg mass, bounces on the ground with an initial velocity of 8 m/s. If the grounds exerts an average force of 30N on the ball of and the ball rebounds with a velocity of 5 m/s, determine the time the ball is in contact with the ground.

a)

-19.5

b)

0.65s

c)

6.5s

d)

0.25s

50.

From what height must a 20kg hammer fall in order to do 600J of work on a stake being driven into the ground?

a)

3.06m

b)

30m

c)

6m

d)

0.03 m

51.

Two students are working together to build a birdhouse. Student 1 applies a force of 10 N to a wooden board in order to slide it across the table to Student 2. If the force of friction resisting the student's push is 4 N, what is the net force acting on the board?

a)

4 N

b)

6 N

c)

10 N

d)

14 N

52.

A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N. if the resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s2?

a)

18 m/s2

b)

18.5 m/s2

c)

19 m/s2

d)

20 m/s2

53.

Where is the ball at the maximum kinetic energy?

a)

3

b)

7

c)

9

d)

6

54.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

55.

Which of the following best describes the object in this diagram.

a)

A box sitting on the floor.

b)

A hockey puck gliding to the right.

c)

An athlete running to the right.

d)

A skateboarding gliding to the left.

56.

Which free body diagram is correct for a car being pulled at a constant velocity?

a)

A

b)

B

c)

C

d)

D

e)

E

57.

Which freebody diagram best represents an air balloon hovering in the air

a)
b)
c)
d)
58.

Which freebody diagram best represents a bookbag resting on the classroom floor?

a)
b)
c)
d)
59.

What is the kinetic energy of a ball with a mass of 5kg rolling at 10m/s

a)

50 J

b)

500 J

c)

250 J

d)

25 J

60.

An airplane designed to carry a space shuttle has a top speed of 236 m/s, at which its kinetic energy is 9,760,000,000 J. What is its mass?

a)

175,237 kg

b)

41,355,932 kg

c)

87618.5 kg

d)

350,474 kg

61.

Based on the diagram of a roller coaster car on a roller coaster track, what statement is true?

a)

The car at point A has more kinetic energy than the car at point C

b)

The car at point C has less kinetic energy than the car at point B.

c)

The car at point C has more kinetic energy than the car at point B.

d)

The car at point D has less potential energy than the car at point B.

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