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Intro to Forces and Newton's Law of Motion

Total questions: 60

Worksheet time: 41mins

Name
Class
Date
1.
What is a PUSH or PULL of an object?
a)
Motion
b)
Force
c)
Friction
d)
Gravity
2.
Why is it harder for the boy in Image B to get down the hill?
a)
Motion
b)
Friction
c)
Work
d)
Displacement
3.

If these boys are pulling with the exact same amount of force. What will happen?

a)

The boy in blue will win.

b)

They will not move at all.

c)

The boy in red will win.

d)

Both will fall down.

4.
Which force produces a change in motion?
a)
unbalanced force
b)
balanced force
c)
gravitational force
d)
frictional force
5.
It takes more force to accelerate the iron man on the left than the iron man on the right because the iron man on the left has more mass. This best describes
a)
Newton's first law, the law of inertia
b)
Newton's second law, the law of acceleration
c)
Newton's third law, the law of action reaction 
d)
The law of universal gravitation
6.
The formula 
? = mass x acceleration
or 
? = m x a 
is used to find 
a)
Force
b)
Velocity
c)
Momentum
d)
Gravity
7.
For every action, there is an equal and opposite reaction.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
8.
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
9.

You push off and the boat moves the opposite direction. This is Newtons ____ law.

a)

1st

b)

2nd

c)

3rd

10.
What is the attractive force that exists between all objects that have mass?
a)
Weight
b)
Mass 
c)
Gravity
d)
Viscosity
11.
If an object is stationary (not moving) the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
12.
When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?
a)
The cannon moving forward
b)
The cannonball moving forward
c)
The cannon moving backward
d)
The cannonball moving backward
13.
What Newtons law does this picture represent
a)
Newtons 2nd law 
b)
Law of gravity 
c)
Newtons 1st law
d)
Newtons 5th law
14.
When you push a boat off from the dock, you are demonstrating Newton's 3rd Law of Motion. It simply states that for every action there is an equal and opposite _______________?
a)
Motion
b)
Change
c)
Reaction
d)
Push
15.

The unit of measure for force is _____________

a)

meters

b)

joules

c)

miles per hour

d)

newtons

16.

What kind force produces a change in motion?

a)

unbalanced force

b)

balanced force

c)

gravitational force

d)

frictional force

e)

normal force

17.

Which of these objects has the most Inertia?

a)

person

b)

ant

c)

cat

d)

bike

18.

Which formula would you use to calculate the force acting on an object using Newton's 2nd law of motion?

a)

 F = m ×aF\ =\ m\ \times a  

b)

 F = maF\ =\ \frac{m}{a}  

c)

 F = m+aF\ =\ m+a  

d)

 F= FaF=\ \frac{F}{a}  

19.

According to Newton's second law, if you increase the force applied to an object :

a)

it increases the acceleration of the object

b)

it increases the mass of the object

c)

it increases the inertia of the object

d)

it slows the motion the object

20.
Who is the scientist who came up with the Laws of Motion?
a)
Sir Issac Newton
b)
The Greeks
c)
John Dalton
d)
Sir John Newt
21.

Which of the following actions can describe "acceleration"?

a)

slowing down motion

b)

increasing motion

c)

changing direction

d)

All of the above

22.

The rate at which motion CHANGES is:

a)

acceleration

b)

speed

c)

velocity

d)

physics

23.
You push against the floor when you walk and the floor pushes back on you.
a)
Newton's
1st
Law of Motion
b)
Newton's
2nd
Law of Motion
c)
Newton's
3rd
Law of Motion
24.

Determine the acceleration that result when a 12 newton net force is applied to a 3 kg object.

a)

36 m/s2

b)

4 ft/s 2

c)

15 m/s2

d)

4 m/s 2

25.

Objects with greater mass have less inertia; objects with greater mass have less inertia.

a)

true

b)

false

26.
If net force acting on object is 0, then the force is considered to be..
a)
Balanced
b)
Unbalanced
c)
Equal in Direction
d)
Distance/Time
27.

What is the net force on the refrigerator shown to the right?

a)

2200 Newtons to the right

b)

250 Newtons to the left

c)

0 newtons, all forces are balanced

d)

150 Newtons to the right

28.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
29.
Which has more Inertia? (so need more force to move) 
a)
Truck
b)
Ant
c)
A cat
d)
A skateboard
30.
According to Newton's second law, if you increase the force applied to an object :
a)
it accelerates more
b)
it doesn't move
c)
you get more inertia
d)
it decelerates
31.
What pulls a ball back to earth?
a)
Balanced forces
b)
Gravity
c)
Friction
d)
Inertia
32.

Magnetic Force:

a)

Is the force of attraction or repulsion generated by rough materials.

b)

Is a force that opposed motion between two objects that are in contact.

c)

Is a force that repulses objects generated by magnetic material.

d)

is a force of attraction or repulsion generated by a magnetic material.

33.

Which forces are considered contact forces?

a)

Air Resistance

b)

Magnetic

c)

Frictional

d)

Gravitational

34.

Which of the following forces are considered non-contact?

a)

Frictional

b)

Air Resistance

c)

Magnetic

d)

Gravitational

35.

The force that naturally pulls objects to the center of earth is called

a)

Electromotive Force

b)

Strong Force

c)

Magnitude

d)

Force of Gravity

36.

A smoother surface will have ______ friction than a rough surface.

a)

More

b)

Less

c)

The same amount

37.

A type of friction that occurs when air pushes against a moving object it to decelerate.

a)

surface area

b)

air resistance

c)

velocity

d)

gravity

38.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
d)
cannot be determined
39.
You push on a tree with 20 N of Force. If the tree doesn't move, the tree is pushing back on you with _____of Force.
a)
20 N 
b)
40 N 
c)
10 N 
d)
0 N
40.
How will this object move? 
a)
It won't move. 
b)
It will move to the right. 
c)
It will move to the left. 
d)
It will move up. 
41.

Which of these is considered a contact force?

a)

the force between two charged particles

b)

the friction between an object and air

c)

the gravitational pull of a planet

d)

the force between two magnets

42.

A box has two forces acting on it. Once force is 100 N upward. Another force is 50 N downward. What is the net force of the box?

a)

50 N downward

b)

50 N upward

c)

100 N upward

d)

100 N downward

43.

Why are some forces considered to be noncontact forces?

a)

Objects push each other apart to increase the distance between them.

b)

Objects must be large in size in order to exert a force that is strong enough to notice.

c)

Objects do not have to touch each other to experience a force.

d)

Objects must be far apart in order to exert a force.

44.

The diagram shows the forces acting on a box. What is the the vertical net force (up and down)?

a)

50 N up

b)

50 N down

c)

0 N no movement

d)

0 N down

45.
What is gravity?
a)
A force
b)
Energy
c)
A push
d)
All of them
46.
Which one is balanced?
a)
top
b)
bottom
c)
both
47.
If there are two forces going in the SAME direction, you would ...?
a)
(-) Subtract the forces
b)
(+) Add the forces
c)
Neither
d)
(x) Multiply
48.

Forces that have a net force of Zero (0) are ______________.

a)

Balanced force

b)

Unbalanced force

49.

What is the net force?

a)

30 N left

b)

25 N right

c)

55 N right

d)

5 N left

50.

How will this object move?

a)

It won't move.

b)

It will move to the left.

c)

It will move in both directions.

d)

It will move to the right.

51.

How will this object move?

a)

It won't move.

b)

It will move to the right.

c)

It will move to the left.

d)

It will move up.

52.

What is the net force?

a)

1000 N upward

b)

500 N right

c)

40 N right

d)

0 N

53.

What Is the Net Force?

a)

0 N

b)

10 N right

c)

10 N left

54.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
55.
If these teams are pulling with the same amount of force what will happen?
a)
The boy in blue will win.
b)
They will not move at all.
c)
The boy in red will win.
d)
Both will fall down.
56.
In a tug of war the left team pulls with a force of 200N. The right team pulls with a force of 150N. What is the resultant force?
a)
50N to the left.
b)
350N to the left.
c)
350N to the right.
d)
50N to the right.
57.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down
58.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down
59.
The FORCE that PULLS things down or back to EARTH.
a)
Speed
b)
Gravity
60.

Which of the following objects will experience an unbalanced force?

a)

A bike rider on a smooth and level road, pedaling at a constant rate.

b)

A train pulling on another train, each with the same amount of force.

c)

A chair sitting on the floor with balanced forces acting in opposite directions.

d)

A ball rolling across the floor with friction acting in the opposite direction.

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