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Physics Final Exam Review

Total questions: 45

Worksheet time: 1hrs 8mins

Name
Class
Date
1.

In which of the following cases is NO work done?

a)

climbing stairs

b)

lifting a weight for 10 bicep curls

c)

pushing a shopping cart

d)

holding a tray steady

2.
If a force of 26 N is exerted on two balls, one with a mass of 0.52 kg and the other with a mass of 0.78 kg, which ball will have the greater acceleration?  (F=ma)
a)
The one with a mass of .78 kg will have the greatest acceleration.
b)
The one with a mass of .52 kg will have the greatest acceleration.
c)
They will both accelerate at the same rate.
3.

What type of wave has the largest wavelength and the lowest frequency on the electromagnetic spectrum?

a)

Radio

b)

Micro

c)

Gamma

d)

X ray

4.

Houses with hardwood are louder than houses with carpet because the sound waves (noise) is not __________.

a)

absorbed

b)

diffracted

c)

reflected

d)

refracted

5.

Why is the balloon attracted to the cat?

a)

The balloon and the cat's hair have opposite electric charges

b)

The cat sat in glue

c)

The balloon is in love with the cat

d)

The balloon and the cat's hair have the same electric charges

6.

Why do magnets held close to television screens cause the picture to distort?

a)

chemically changes the molecules in the screen

b)

attracts photons in the pixels on the screen

c)

it distorts the path of electrons flowing from inside the TV to the screen

d)

interacts with waves on the satellite reception

7.
In each of the following cases, determine where the car has no acceleration ?
a)
A car shortly after a stoplight turns green.
b)
A car approaching a red light
c)
A car with the cruise control set at 80 km/h
d)
A car turning a curve at a constant speed
8.
When you paddle BACKWARDS on a canoe, the canoe goes FORWARD.
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
9.

According to the ESRT, which material would require the most heat energy to increase the temperature of 1 gram of the material one Celsius degree?

a)

Ice

b)

Water

c)

Basalt

d)

Granite

10.

Where does the pendulum have the greatest kinetic energy?

a)

A

b)

B

c)

C

d)

D

e)

E

11.
How much work is done using a 60 watt light bulb for 1 hour?
a)
60 J
b)
216,000 J
12.

A girl weighs 400 N. She runs up a flight of stairs of height 5 m in 4 seconds. Calculate her power.

a)

320 W

b)

400 W

c)

500 W

d)

2 000 W

13.

What is the difference between speed & velocity?

a)

Velocity is a vector, so it includes direction.

b)

There is no difference.

c)

Velocity measures the volatility while speed measures how fast.

d)

Speed is a vector, so it includes direction.

14.

What is the total displacement of the car?

a)

60 m

b)

20 m

c)

0 m

d)

80 m

15.

What is the total distance traveled by the car?

a)

60 m

b)

20 m

c)

0 m

d)

80 m

16.

The slope of a Velocity - Time Graph gives the ______ of the object.

a)

acceleration

b)

velocity

c)

speed or velocity

d)

displacement

17.

What is the energy conversion when you plug in a fan?

a)

light to mechanical (motion)

b)

electrical to heat

c)

mechanical (motion) to light

d)

electrical to mechanical (motion)

18.

All forces acting upon a body are equal in magnitude and opposite in direction. The object is initially motionless and will remain motionless.


What is this condition called?

a)

Balanced forces

b)

Unbalanced forces

c)

Static equilibrium

d)

Dynamic kinetics

19.
Which is a tool that is used in medicine to view internal organs and pregnancy.
a)
radar
b)
doppler
c)
ultrasound
d)
sonar
20.
 The graph shows Ashley riding her bike to Maria's house. 
What is occurring from point A to point B?
a)
they are traveling at a constant speed
b)
they are decreasing in speed
c)
they stopped to take a break
21.
What does this graph represent?
a)
Constant speed
b)
Acceleration
c)
Not moving
22.
No machine in existence has 100% efficiency due to ____________________.
a)
magic
b)
friction
c)
smoke
d)
input
23.

How does the mass of an object effect the gravitational attraction of an object?

a)

The smaller the mass of the object the greater the gravitational force.

b)

The mass of the object has no effect on the gravitational force

c)

The greater the mass of the object the less the gravitational force.

d)

The greater the mass of the object the greater the gravitational force.

24.

Direction of current in the wire is

a)

Upwards

b)

Downwards

25.
Light bending as it passes from one medium (object) to another is...
a)

Refraction

b)

Reflection

c)

Diffraction

d)

Absorption

26.
A bulb has 3V across it when a current of 0.1 amps flows.  What is its power?
a)
30 W
b)
0.3 W
c)
10 W
27.
A boy kicks a football with a force of 20 N in 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
28.
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.
29.

What is general relativity?

a)

Einstein's explanation that objects can travel faster than the speed of light.

b)

The general amount of energy that is equivalent to its mass counterpart.

c)

Einstein's explanation that gravity is created by the warping of spacetime from massive objects.

d)

Your favorite class in school compared to your least favorite class in school.

30.

Lake Mead, the reservoir above Hoover Dam, has a surface area of approximately 640km2. The top 1m of water in the lake weighs about 6.3 x 1015N. The dam holds that top layer of water 250m above the river below. Calculate the gravitational potential energy of the top 1m of water in Lake Mead.

a)

3.86 x 1014 J

b)

1.40 x 1014 N

c)

1.58 x 1015 J

31.

Calculate the gravitational potential energy of a 65kg climber on top of Mount Everest (8800m high).

a)

6.86 x 105 N

b)

7.20 x 106 J

c)

5.61 x 106 J

d)

None of the answers are correct

32.

A 2 kg brick is pulled by a force of 10N. Friction force is 4 N. What is the acceleration?

a)

3 N

b)

3 ms-2

c)

5 ms-2

d)

2 ms-2

33.

Momentum is conserved __________ collisions.

a)

only in elastic

b)

only in inelastic

c)

in all

d)

never during

34.

Kinetic energy is conserved __________ collisions.

a)

only in elastic

b)

only in inelastic

c)

in all

d)

never during

35.
If centripetal force stopped acting on all satellites they would continue traveling in space in a constant direction and constant speed.
a)
True
b)
False
36.

The metric prefix that means million?

a)

hecto-

b)

kilo-

c)

deca-

d)

mega-

37.

What happens to the force between two charged objects when you double the distance between them?

a)

it doubles

b)

it is cut in half

c)

it quadruples

d)

it is cut by 1/4

38.

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.

39.

The diagram shows a research vessel using sonar to map the ocean floor.


Upon which basic behavior of sound waves does this technology depend?

a)

absorption

b)

compression

c)

reflection

d)

refraction

40.

As mass increases, what happens to gravitational force?

a)

increases

b)

decreases

c)

stays the same

41.
The heat from a lamp allows a lizard to remain warm. This is an example of which type of heat transfer?
a)
radiation
b)
conduction
c)
convection
d)
insulation
42.
What will happen if one light bulb is removed from this circuit?
a)
The other bulbs will go out.
b)
The other bulbs will stay on
c)
The other bulbs will get dimmer.
d)
The battery will become stronger.
43.
Which will produce more torque to loosen the lug nut?
a)
A
b)
B
c)
They are the same
44.
An object in motion tends to stay in motion unless an ___ force acts on it.
a)
unbalanced
b)
balanced
45.
According to which law of energy, energy can't be created or destroyed?
a)

Newton's laws of motion

b)

Murphy's law

c)

Einstein's theory of general relativity

d)

law of conservation of energy

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