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Units 7-8 Review

Total questions: 114

Worksheet time: 3hrs 48mins

Name
Class
Date
1.

Which type of force resists motion?

a)

Friction

b)

Gravity

c)

Pull

d)

Push

2.

What happens in a game of tug-a-war when both teams pull the rope with equal force and in opposite directions?

a)

The rope does not move

b)

Both teams move to the right

c)

Both teams move to the left

d)

Both teams fall down

3.

A student is pushing a book with a force of 10 Newtons to the left. Another student is pushing the book to the right. How many Newtons of force is the second student pushing with if the book is not moving?

a)

10 Newtons

b)

5 Newtons

c)

0 Newtons

d)

1 Newton

4.

A baseball pitcher throws a baseball. It does not reach the catcher. What should the pitcher do to make a ball reach the catcher?

a)

Increase the force used when throwing the ball

b)

Decrease the force used when throwing the ball

c)

Reduce the gravity exerted on the ball

d)

Increase the gravity exerted on the ball

5.

The amount of matter within an object.

a)

Weight

b)

Mass

c)

Atomic Number

d)

Density

6.

The rate of change of velocity per unit of time.

a)

Acceleration

b)

Speed

c)

Velocity

d)

Centripetal Force

7.

For every action there is an equal and opposite reaction.

a)

Law 1

b)

Law 2

c)

Law 3

d)

This is not true

8.

The sum of all of the forces acting on an object. If it is in the same direction, you will add; if it is in opposite directions, you will subtract.

a)

Force

b)

Total Force

c)

Net Force

d)

Air Force

9.

A push or a pull

a)

Force

b)

Inertia

c)

Domain

d)

Velocity

10.

What direction does is friction applied to an object?

a)

In the opposite direction that object is moving.

b)

In the same direction that the object is moving.

c)

In the opposite direction of the applied force

d)

in the same direction of the applied force.

11.

What object has the most inertia?

a)

A truck, because it has the most mass

b)

a car, because it has more mass than the bike and skate board.

c)

a bike, because it has more mass than the skateboard.

d)

a skate board, because it had the least amount of mass.

12.

Which image is an example of an unbalanced force.

a)

Image 1 (top image)

b)

Image two (bottom image)

13.

Which image is an example of a balanced force?

a)

Image 1

(Top Image)

b)

Image 2

(Bottom Image)

14.

If a car is traveling at 25 mph it is an example of _________.

a)

acceleration

b)

speed

c)

density

d)

mass

15.

Which of Newton's laws is represented by this image?

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

16.

When object is changing position it is called ______.

a)

Movement

b)

Motion

c)

Speed

d)

Density

17.

This is Newton's 3rd law

a)

True

b)

False

18.

What law is best described

A magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

a)

Newton's 1st Law

b)

Newton's 2nd Law

c)

Newton's 3rd Law

19.

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

20.

The equation to calculate momentum is

a)

p=mv

b)

p=1/2mv2

c)

p=mgh

d)

p=mg

21.

In any collision (crash) the ______ is ALWAYS constant

a)

Total Momentum

b)

total speed

c)

total Velocity

d)

Energy

22.

When the velocity of an object is doubled, its momentum

a)

remains unchanged in accord with the conservation of momentum.

b)

doubles

c)

quadruples

d)

decreases

23.

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

24.

What is the unit for mass?

a)

m/sec

b)

kg/sec

c)

kg

d)

kg m/sec

25.

Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?

a)

car

b)

bike

c)

they are equal

d)

cannot determine using the info provided

26.

When two objects collide, the Pbefore is ____________ the Pafter.

a)

more than 

b)

less than 

c)

equal to

d)

unrelated to

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.

How much momentum does a stationary battle ship have if it has a mass of 2,575,000 kg?

a)

2,575,000 N

b)

2,575,000 kg m/s

c)

0 Momentum requires mass and velocity

d)

none of the above

29.

Which unit is used to measure force?

a)

Kilogram

b)

Meter

c)

Newton

d)

Joule

30.

The geese fly 23 mph to the south when they migrate for the winter.

a)

speed

b)

velocity

c)

acceleration

31.

What is the formula to calculate speed?

a)

s = t ÷ds\ =\ t\ \div d

b)

s = t × ds\ =\ t\ \times\ d

c)

s = d ÷ ts\ =\ d\ \div\ t

d)

s = d × ts\ =\ d\ \times\ t

32.

Velocity is both ____ and _____. 

a)

speed, direction

b)

volume, density

c)

direction, mass

d)

direction, magnitude

33.

Which of the following is a unit of speed ?

a)

sec

b)

mi

c)

m/s

d)

min

34.

Which of the following questions relates to time?

a)

How far is it

b)

How fast does it go

c)

How long does it take

d)

How quickly does the speed change

35.

If an object has a positive velocity and a positive acceleration it is...

a)

Speeding up

b)

Slowing down

c)

Changing direction

d)

Stopping

36.

The geese fly 23 mph to the south when they migrate for the winter.

a)

speed

b)

velocity

c)

acceleration

37.

Changes in our speed, direction or both are called _________.

a)

gravity

b)

changes

c)

acceleration

d)

displacement

38.

What is speed?

a)

how far you go

b)

how much distance is covered over a period of time

c)

how fast you accelerate

d)

the change in the location of a object

39.

What does velocity include that speed does not?

a)

Distance

b)

Direction

c)

Acceleration

d)

Time

40.

If a car is slowing down, its acceleration is:

a)

Positive

b)

Negative

c)

Zero

d)

Constant

41.

If a giraffe can run 30 meters in 2 seconds, how fast are they going?

a)

30 m/s

b)

20 m/s

c)

15 m/s

d)

2 m/s

42.

What is happening in this Speed vs Time graph from 0 seconds to 5 seconds?

a)

Acceleration (speeding up)

b)

Steady Speed

c)

Deceleration (slowing down)

d)

Not moving

43.

On this Distance vs Time graph, what is happening between W and X?

a)

Going up a hill

b)

Speeding up

c)

Moving away at a steady speed

d)

Not moving

44.

Acceleration is defined as the CHANGE in 

a)

time of motion to another place. 

b)

velocity 

c)

distance 

d)

speed

45.

What is this?

A car is traveling 50 mph.

a)

Speed

b)

Velocity

c)

Acceleration

46.

What is this?

"Rocky is running 8mph North"

a)

Speed

b)

Velocity

c)

Acceleration

47.

What is this?

a)

Speed

b)

Velocity

c)

Acceleration

48.

30 km/hr is an example of...

a)

Speed

b)

Velocity

c)

Acceleration

d)

Distance

49.

88 m/s2

a)

Speed

b)

Velocity

c)

Acceleration

50.

Which of the following is a unit for acceleration?

a)

km/s

b)

m/s2

c)

mi/hr

d)

ft

51.

Which of the following is a unit of time?

a)

sec

b)

mi

c)

m/s

d)

km

52.

Which of the following could be a unit for Distance?

a)

60 m

b)

50 m/s

c)

70 s

d)

50 m/s/s

53.

Which is not a unit for distance?

a)

50 m

b)

50 ft

c)

50 m/s

d)

50 in

54.

Which graph represents the greatest acceleration?

a)

A

b)

B

c)

C

d)

D

55.

What happened during C to D point?

a)

not moving

b)

increasing speed at a constant rate

c)

moving at a constant speed

d)

moving at 0 m/s2 acceleration

56.

How can acceleration be zero?

a)

a car runs out of gas and slowly rolls to a stop

b)

a car decreases speed at a constant rate until it comes to rest

c)

car has constant speed and is traveling on a straight path

d)

the car travels round trip and is back at the starting point

57.

What is happening at segment B?

a)

no motion/object at rest

b)

constant speed

c)

acceleration

58.

Which graph shows the object standing still?

a)

A

b)

B

c)

C

d)

D

59.

Dorothy was initially at rest. She sped up to 9 m/s in 24 seconds. What was her acceleration?

a)

2.7 m/s2

b)

-2.7 m/s2

c)

-0.375 m/s2

d)

0.375 m/s2

60.

You ride your bike in a straight line at a constant speed of 10 km/h.

a)

Acceleration occurred because speed increased.

b)

Acceleration did not occur because neither speed nor direction changed.

c)

Acceleration occurred because you changed directions.

d)

Acceleration occurred because speed decreased.

61.

What are the three ways an object can accelerate?

a)

Speed up, slow down or change direction

b)

Go forward, go backward or stop

c)

Turn left, turn right or go straight

d)

distance, displacement or speed

62.

What would a negative acceleration indicate?

a)

The object is going backwards

b)

The object is going forwards.

c)

The object is speeding up.

d)

The object is slowing down.

63.

What would a positive acceleration indicate?

a)

The object is going backwards

b)

The object is going forwards.

c)

The object is speeding up.

d)

The object is slowing down.

64.

Which of the following is an example of a SPEED?

a)

35 seconds

b)

45 minutes

c)

60 mph (miles per hour)

d)

50 meters

65.

The length between two places

a)

distance

b)

speed

66.

A boy does 18 J of work in 2 s on his backpack as he lifts it from a table.

How much power did the boy use on the backpack?

( Include your units!)

4 lines
67.

You do work when you mannequin pose with an object in your hand.

a)

True

b)

False

68.

Work divided by time equals...

a)

energy

b)

power

69.

The unit used to measure power is the 

a)

Watt

b)

Newton

c)

Joule

d)

Newton*meter

70.

How much time is needed to produce 720 Joules of work if 90 watts of power is used? 

a)

0.125 s

b)

8 s

c)

64800 s

d)

80 s

71.

Two factors that determine work are...

a)

Force

b)

Mass

c)

Velocity

d)

Distance

72.

True or false
You do work only when you exert a force on an object and move it

a)

true

b)

false

73.

work is a measurement of how much force is applied over a certain

a)

distance

b)

velocity

c)

shape

d)

size

74.

units for work are

a)

netwons

b)

joules

c)

meters

d)

seconds

75.

work transfers

a)

sweat

b)

energy

c)

velocity

d)

effort

76.

Which of the following is the best example of work being done.

a)

doing homework

b)

lifting a box

c)

pushing a stationary box

d)

holding a box

77.

A 5000N block is lifted 10 m. How much work was done?

a)

50000 J

b)

5000 J

c)

500 J

d)

50 J

78.

 Work done = Force x _________

a)

a. distance

b)

b. acceleration

c)

c. velocity

d)

d. speed

79.

Force is a _____ or _______

a)

simple    complex

b)

push     pull

c)

up      down

d)

in      out

80.

Power is defined as the quantity that measures the rate at which _____ is done or energy is transformed.

a)

energy

b)

time

c)

work

d)

elasticity

81.

Energy of a rock perched on a cliff is an example of...

a)

gravitational

b)

elastic

c)

chemical

d)

kinetic

82.

Energy from a compressed spring would be an example of...

a)

kinetic

b)

elastic

c)

gravitational

d)

chemical

83.

Gravitational potential energy depends on the ________ and ________ of the object.

a)

Height and mass

b)

Spring constant and Distance away from equilibrium

c)

Mass and Velocity

d)

Height and Friction

84.

Kinetic energy depends on the ________ and ________ of the object.

a)

Height and Mass

b)

Spring constant and Distance away from equilibrium

c)

Mass and Velocity

d)

Height and Friction

85.

Energy of Motion

a)

kinetic

b)

potential

c)

power

d)

efficiency

86.

A runner exerts 240,000 J when she runs for 10 min. What is the runner's power?

a)

400 W

b)

600 W

c)

400 J

d)

600 J

87.

The "power" of a machine measures...

a)

The work it does

b)

The force it produces

c)

The rate of doing work

d)

Its strength

88.

An object at rest may also have...

a)

Speed

b)

Velocity

c)

Momentum

d)

Kinetic Energy

e)

Potential Energy

89.

A ball rolling down an incline plane has its maximum potential energy at...

a)

The top

b)

A quarter of the way down

c)

Half way down

d)

The bottom

e)

Impossible to predict

90.

Which quantity has the greatest influence on the amount of kinetic energy a large truck has while moving down the highway?

a)

It's mass

b)

It's weight

c)

It's velocity

d)

It's size

e)

None of the above

91.

Heat energy

a)

Thermal energy

b)

Potential energy

c)

Nuclear energy

d)

Kinetic Energy

92.

Can energy be created or destroyed?

a)

Yes

b)

No

c)

Sometimes

93.

What is energy?

a)

The ability to do work

b)

Light

c)

Heat

d)

Gas

94.

A car moving down the road is an example of

a)

Potential

b)

Kinetic

95.

Which skier will have a greater potential energy? 

a)

Skier 1

b)

Skier 2

96.

This form of energy could be represented by the movement of electrons within copper wires.

a)

Electrical

b)

Light

c)

Sound

d)

Mechanical

97.

If your cup of hot chocolate is really hot that means it has a lot of this type of energy.

a)

Chemical

b)

Thermal

c)

Electrical

d)

Potential

98.

What type of energy is best represented by a battery?

a)

Sound

b)

Thermal

c)

Mechanical

d)

Chemical

99.

If you are playing sports, this type of energy is present when the ball is going the fastest.

a)

Electrical

b)

Potential

c)

Kinetic

d)

Chemical

100.

What type of energy is most responsible when you chew your food?

a)

Chemical

b)

Mechanical

c)

Electrical

d)

Potential

101.

True or False. Energy cannot be created or destroyed, rather it is transformed from one energy type to another.

a)

True

b)

False

102.

Units of Force (F)

a)

s

b)

kg

c)

m

d)

N

103.

Units of mass (m)

a)

s

b)

N

c)

kg

d)

kg m/s

104.

Units of energy (KE, PE, EE)

a)

kg

b)

J

c)

kg m/s

d)

m/s2

105.

Which one shows the unit for mass?

a)

8 m/s

b)

9m

c)

10 kg

d)

12 m/s

106.

What are the units for mass?

a)

Newtons

b)

Newtons/second

c)

kilograms

d)

meters/second

107.

What are the units for weight?

a)

kilogram

b)

mass

c)

Newtons

d)

meters

108.

Which correctly shows a unit of Force?

a)

8N

b)

8 kg

c)

8m

d)

8 m/s

109.

A student needs 10 Newtons of force to lift a box to the top of a 2 meter shelf. How much work do they do?

a)

12 J

b)

8 J

c)

20 J

d)

5 J

110.

Which of these is a measurement of power?

a)

100 joules

b)

100 watts

c)

100 meters per second

d)

100 hertz

111.

Which of the following is true about work?

a)

It measures how quickly an object accelerates

b)

It measures how much effort is applied over a distance.

c)

It measures the change of an object's rate of speed.

d)

It measures how much time it takes to move an object.

112.

How do you know when a force has been applied to an object?

a)

It moves.

b)

It flies.

c)

It accelerates.

d)

It gets bigger.

113.

Two people are lifting the same weight as shown in the animation. If they both do 10 reps, who will supply the most power?

a)

Bro A

b)

Bro B

c)

They both will do the same work

d)

Can't tell without knowing the weight they are lifting

114.

A motor produces 500.0 W of power in 15 s. How

much work is done?

a)

7,500 J

b)

33 J

c)

765 J

d)

8,000 J

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