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Newton's Laws

Total questions: 68

Worksheet time: 1hrs 7mins

Name
Class
Date
1.

Sir Isaac Newton lived from ____ to ____.

a)

1642 - 1726

b)

1824-1876

c)

1902 - 1979

d)

1066 - 1107

e)

1202-1267

2.
What is the force that causes objects to fall to Earth?
a)
Air resistance
b)
Gravity
c)
Water resistance
d)
Pressure
3.
What is the name of the units that we measure force in?
a)
Einsteins 
b)
Newtons
c)
Kg
d)
Metres
4.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
5.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
6.
The sum of all forces acting on an object.
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
7.

All objects have inertia

a)

True

b)

False

8.

Inertia depends on ______

a)

Velocity

b)

Speed

c)

Distance

d)

Mass

9.

More mass = More inertia

a)

True

b)

False

10.

Inertia is the tendency of an object to resist a change in its ___________.

a)

temperature

b)

shape

c)

size

d)

motion

11.

the tendency of an object to resist a change in its motion

a)

acceleration

b)

inertia

c)

mass

d)

frame of reference

12.
Which of the following is a unit for acceleration?
a)
km/s
b)
m/s2
c)
mi/hr
d)
ft
13.
When a car goes around a corner at 20 mph, why do we say it  accelerates?
a)
The car is accelerating because of the velocity is constant
b)
The car accelerates because it's going 20 mph
c)
Cars always accelerate when they are in motion
d)
The car is accelerating because it's changing direction
14.
Acceleration can be classified as _______________
a)
Speeding up
b)
Slowing Down
c)
Changing directions
d)
All of the above
15.

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

a)

remain in motion, in a straight line @ a constant speed.

b)

eventually come to a stop.

c)

change its momentum in a straight line @ a constant rate.

d)

accelerate.

16.
A sled sliding on a flat, icy surface with a constant velocity is best described by
a)
Newton’s first law of motion for objects at rest.
b)
Newton’s first law of motion for objects in motion.
c)
Newton’s second law of motion.
d)
Newton’s third law of motion.
17.
What is the definition of "weight"?
a)
the force in which gravity pulls on an object
b)
the time it takes to get on a ride 
c)
the amount of matter in an object
d)
the size of an object
18.

Which of these best describes why your weight (on Earth) would change on another planet?

a)

weight doesn’t change, no matter where you are

b)

different planets have different gravitational pulls based on their mass

c)

In general, the smaller the planet, the greater weight

d)

dehydration effects on different planets change weight

19.
An automobile you are riding in suddenly stops, but you continue to go forward.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
20.

Which law helps explain why we must wear a seatbelt (because an object in motion wants to stay in motion)?

a)

Newton's First Law

b)

Newton's Second Law

c)

Newton's Third Law

d)

Newton's Fourth Law

e)

Cam Newton's Law of Panthers

21.

According to the Newton’s Universal Law of Gravitation, the force of gravity between two objects is directly proportional to

a)

The distance between the objects.

b)

The product of the masses of the objects.

c)

The gravitational constant.

d)

The square of the distance between the objects.

22.
Complete the following statement: The farther away two planets are the _______ the gravitational force between them.
a)
more
b)
same
c)
dosen't matter
d)
less
23.

Which configuration will result in the greatest gravitational force?

a)

small masses far apart

b)

large masses far apart

c)

small masses close together

d)

large masses close together

24.

Newton's Third Law of Motion states that forces

a)

always act in equal or opposite pairs

b)

equal mass times velocity

c)

act on an object to move it or to stop it.

25.
Compared to that of the Earth, the escape velocity you need to take off from the moon is ___
a)
a lot more
b)
slightly more
c)
slightly less
d)
a lot less
26.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
27.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
28.
If Earth's mass was cut in half, what would happen to your weight?
a)
Increase because gravitational force increases
b)
decrease because gravitational force decreases
c)
decrease because gravitational force increases
d)
nothing, weight is not affected by gravitational force
29.

Two factors effecting the strength of gravity between 2 objects are...

a)

weight and mass

b)

distance and weight

c)

mass and matter

d)

mass and distance

30.
A person would weigh more on Jupiter than on the Earth because---
a)
Jupiter has less mass, and therefore less gravity
b)
Jupiter has more mass, and therefore less gravity.
c)
Jupiter has less mass, and therefore more gravity.
d)
Jupiter has more mass, and therefore more gravity
31.

What prevents planets from drifting off into space and keeps it in the planets in our Solar System?

a)

Gravity

b)

Weight

c)

Friction

d)

Forward Motion

32.
Which model has greater gravitational attraction (if any)
a)
Model A
b)
Model B
c)
Both Model A and Model B (same gravity)
33.

Which system has the greater gravitational attraction between the two objects (if any)?

a)

System A

b)

System B

c)

Same gravitational attraction for System A and System B

34.

Is gravity a push, a pull, or both?

a)

push

b)

pull

c)

both

35.

Mass is...

a)

A force

b)

The amount of matter in an object

c)

Measured in Newtons

d)

Measured in grams or kilograms

36.

Weight is...

a)

A force

b)

The amount of matter in an object

c)

Measured in Newtons

d)

Measured in grams or kilograms

e)

Caused by gravity pulling masses together

37.

On a planet, an object's weight force always acts...

a)

Downwards

b)

Towards the centre of the planet

c)

Upwards

38.
When only the force of gravity is acting on an object, we say that the object is in ___________________________.
a)
Terminal Velocity
b)
Free Fall
c)
Projectile motion
d)
Centripetal Force
39.
How does distance affect gravity?
a)
Gravity decreases as distance increases.
b)
Distance decreases as gravity decreases
c)
Distance increases as gravity increases
d)
None of the above
40.

What would happen to Earth if there were no inertia?

a)

Earth would crash into the sun

b)

Earth would fly out to space

c)

Earth would collapse

d)

Earth would orbit the moon

41.
A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?
a)
For every action there is an equal and opposite reaction.
b)
Every mass exerts a force on every other mass.
c)
An object at rest tends to stay at rest.
d)
Friction opposes the motion of an object.
42.
A person in car  slides to the right when going through a very sharp left turn on the highway. 
a)
1st Law
b)
2nd Law
c)
3rd Law
43.
What is the definition of "weight"?
a)
the force in which gravity pulls on an object
b)
the time it takes to get on a ride 
c)
the amount of matter in an object
d)
the size of an object
44.
"For every action, there is an equal and opposite reaction."
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
45.
Force = Mass x Acceleration
a)
Newton's 1st Law
b)
Newton's 2nd Law
c)
Newton's 3rd Law
d)
Newton's 4th Law
46.
The tendency of an object to resist changes in its motion is...
a)
inertia
b)
force
c)
acceleration
d)
velocity
47.
The force that opposes motion between two surfaces in contact with each other.
a)
inertia
b)
friction
c)
momentum
d)
gravity
48.

An archer pulls the bowstring back, then releases the string and the arrow flies forward. Pulling the string back is the...

a)

action force

b)

reaction force

c)

net force

d)

inertia

49.

A cannonball with a mass of 1 kg is flying at an acceleration of 10 m/sec/sec. What is its force?

(F=ma)

a)

100 Newtons

b)

10 Newtons

c)

20 Newtons

d)

9.5 Newtons

50.
The gravitational force of any object near Earth's surface is ____.
a)
unknown
b)
friction
c)
Newton's first law
d)
9.8 m/s2
51.
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
d)
None of them
52.

More mass = Less inertia

a)

True

b)

False

53.

Which of the following statements best describe Newton's 3rd law?

a)

For every action, there is a reaction

b)

When forces balance out, it is due to a reaction force

c)

For every force acting on an object, there is an equal and opposite force acting on the object that caused the force.

d)

Forces on a singular object balance out

54.
A baseball player bats a ball with a force of 1,000 N. The ball exerts a reaction force (without any additional forces action on it) against the bat of...
a)
Less than 1, 000 N
b)
1,000 N
c)
More than 1,000 N
55.
What is the reaction force to a foot pushing down on the floor?
a)
The foot going through the floor
b)
The floor pushing back against the foot
c)
The floor breaking to the foot
56.

As the hammer hits the nail downwards, the hammer experiences an upward force exerted by the nail.

a)

True

b)

False

57.

Which diagrams show action-reaction pairs. Choose more than 1 answers.

a)
b)
c)
d)
58.

Determine the reaction force involved when a ball is hit with a racket with a force of 100 N west.

a)

a force on the ball of 100 N east.

b)

a force on the ball of 100 N west.

c)

a force on the racket of 100 N east.

d)

a force on the racket of 100 N west.

59.

Calculate momentum.

mass = 2 kg

velocity = 6 m/s

a)

4 kg m/s

b)

8 kg/m/s

c)

12 kg m/s

d)

26 kg m/s

e)

8 momentum units

60.

Calculate momentum.

mass = 2 kg

velocity = 4 m/s

a)

4 kg m/s

b)

8 kg/m/s

c)

12 kg m/s

d)

26 kg m/s

e)

8 momentum units

61.

Calculate momentum.

mass = 3 kg

velocity = 4 m/s

a)

4 kg m/s

b)

7 kg/m/s

c)

12 kg m/s

d)

26 kg m/s

e)

8 momentum, tum, tum, tums

62.

Calculate momentum.

mass = 1 kg

velocity = 4 m/s

a)

4 kg m/s

b)

7 kg/m/s

c)

12 kg m/s

d)

26 kg m/s

e)

8 TumTums

63.
Most modern vehicles have padded dashboards. This reduces collision injuries by...
a)
reducing the driver's change in momentum
b)
increasing the driver's change in momentum
c)
increasing the force of impact
d)
increasing the time of impact
64.
A 50 kg ball rolls down the street at 5 m/s. Calculate the momentum of the ball. 
a)
55 kg*m/s
b)
100 kg*m/s
c)
250 kg*m/s
d)
500 kg*m/s
65.
Parkour Peter bends his knees upon landing in order to ____
a)
reduce his change in momentum
b)
increase his change in momentum
c)
increasing his landing time
d)
increasing his landing force
66.
In any collision (crash) the ______ is ALWAYS constant
a)
Total Momentum
b)
total speed
c)
total Velocity
d)
Energy
67.

If a force of 50 Newton's was applied to an object with a mass of 500 grams (0.500 kg), what will the object's acceleration be?

Force = mass x acceleration

Acceleration = Force / mass

a)

10 m/s2

b)

.1 m/s2

c)

100 m/s2

d)

1 m/s2

68.
Which of the following correctly explains why less force is required to stop a person using an airbag?
a)
hitting the airbag decreases the person's momentum
b)
the airbag changes the person's momentum over a longer time interval
c)
the airbag is very soft, like a pillow
d)
decreasing the time of the impact decreases the force of the impact

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