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Forces Review

Total questions: 50

Worksheet time: 46mins

Name
Class
Date
1.
______ forces affect the motion of an object by speeding it up, slowing it down, or changing the direction of it.
a)
Balanced
b)
Strong
c)
Unbalanced
d)
WeaK
2.
As the force applied to an object increases, its acceleration______
a)
decreases
b)
increases
c)
stays the same
d)
does not exist
3.

The free body diagram of four boxes are shown below. Which box shows balanced forces?

a)
b)
c)
d)
4.
What factors affect the amount of friction between two objects?
a)
the type of surface and the velocity of the objects
b)
the velocity and the mass of the objects
c)
the type of surface and the force between the objects
d)
the mass and the distance between the two objects
5.

What type of force is this man using to push his grocery cart?

a)

Normal Force

b)

Gravity

c)

Air Resistance

d)

Applied Force

6.

Is this an example of a balanced or unbalanced force?

a)

Balanced force

b)

Unbalanced force

c)

I don't know

7.

In this force diagram, which arrow is representing Friction?

a)

A

b)

B

c)

C

d)

D

8.

How do you know if this object is balanced?

a)

It's not balanced; it's Net Force is 14 N

b)

It is balanced because its Net Force is 0 N.

c)

It's not balanced; it's Net Force is 10 N left and 4 N up.

d)

I don't know how to tell.

9.

According to this force diagram, is this object balanced or unbalanced?

a)

Balanced

b)

Unbalanced

c)

I don't know

10.

What is the net force?

a)

3 N

b)

3 N, right

c)

17 N, right

d)

3 N, left

11.

Which force is having the greatest impact on this object currently?

a)

Applied force

b)

Normal force

c)

Frictional force

d)

Gravitational force

12.

What is the Net Force on this object?

a)

11 N, right

b)

8 N, right

c)

3 N, left

d)

5 N, right

13.
Balanced forces can speed up, slow down, or change the direction of an object.
a)
True
b)
False
14.

What is the name of the unit that force is measured in?

a)

Einsteins

b)

Meters

c)

Light year

d)

Newtons

15.

The upward force acting on the parachute is called ______________.

a)

Tension

b)

Fluid Friction

c)

Normal Force

d)

Gravity

16.

An orange falls off a tree and lands on the ground. What force caused the orange to fall?

a)

Gravity

b)

Air Resistance

c)

Tension

d)

Normal Force

17.

A moving ball will slow down until it finally stops. What force slows down and stops the ball?

a)

Sliding Friction

b)

Rolling Friction

c)

Static Friction

d)

Magnetic Force

18.

Name the missing force...

a)

Tension

b)

Gravity

c)

Normal Force

d)

Abnormal Force

19.
Why does a book on a table not move?
a)
No forces are acting on the book
b)
Gravity is the only force acting on the book
c)
Forces of the table pushing up and gravity pulling down are balanced
20.

What type of friction is Sally experiencing?

a)

Rolling Friction

b)

Sliding Friction

c)

Fluid Friction

d)

Static Friction

21.
Name the missing force...
a)
spring force
b)
weight force
c)
normal force
d)
buoyant force
22.

The person is unable to move the box; it is stuck in place. Name the missing force...

a)

Static friction

b)

Sliding friction

c)

Rolling friction

d)

Fluid friction

23.
Name the missing force...
a)
applied force
b)
weight force
c)
tension force
d)
drag
24.

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

a)

normal

b)

abnormal

c)

static

d)

gravity

25.

What is the NET FORCE of this diagram?

a)

17 N, right

b)

17 N, left

c)

23 N, right

d)

12 N, up

26.

This object would be moving (pick all that are correct):

a)

up

b)

down

c)

left

d)

right

27.

Which of the following is true about this free-body diagram?

a)

the forces are are balanced

b)

the object is free-falling

c)

the object is moving upward

d)

the forces are unbalanced

28.

What forces are on a leopard laying on a log?

a)

Gravity & Applied Force

b)

Gravity & Friction

c)

Gravity & Normal Force

d)

Tension Force & Normal Force

29.

Rina’s mother asked her to help move some items from the hall closet to the garage. One item she wanted to move was a large box of old school books. Rina tried to lift the box, but could not pick it up. What force was Rina NOT able to overcome?

a)

frictional force

b)

gravitational force

c)

applied force

d)

normal force

30.

Leanna decided to rearrange her bedroom by moving her dresser to the opposite wall. She tried pushing it, but found that the dresser would not move. What force was Leanne NOT able to overcome?

a)

normal force

b)

gravitational force

c)

tension force

d)

frictional force

31.

What type of friction prevents the object from moving?

a)

static

b)

sliding

c)

fluid

d)

rolling

32.
A type of friction that occurs when air pushes against a moving object causing it to decelerate.
a)
surface area
b)
air resistance
c)
velocity
d)
gravity 
33.

Which is stronger, static friction or sliding friction?

a)

They are equal

b)

The magnitude of sliding friction is greater

c)

The magnitude of static friction is greater

34.

which of these is an effect of force?(tick mark the correct answers)

a)

force can start a motion

b)

force can stop a motion

c)

force can change the direction of motion

d)

force can change the shape of an object

e)

force can change the speed a moving object

35.

The forces that need two objects to be in contact with each other are called.......

a)

contact forces

b)

non-contact forces

c)

electric forces

d)

magnetic forces

36.

select the examples of contact forces (select all that apply)

a)

normal reaction

b)

tension

c)

friction force

d)

gravitational force

e)

Applied Force

37.

select the non contact forces (select all that apply)

a)

gravitational force

b)

electric force

c)

magnetic force

d)

friction force

38.

what kind of force is represented in the picture by

 f→\overrightarrow{f}  

a)

gravitation force

b)

electric force

c)

magnetic force

d)

friction force

39.

what is the force acting in the ropes of the swing?

a)

tension

b)

normal reaction

c)

friction

d)

gravitation

40.

what is the force shown in the picture?

a)

magnetic force

b)

electric force

c)

applied force

d)

spring force

41.
After walking across a carpeted floor in socks, Jim brings his finger near a metal doorknob and receives a shock. 
What does this demonstrate? 
a)
Frictional forces require direct contact.
b)
Electrical forces require direct contact
c)
Electrical forces can act at a distance.
d)
Frictional forces can act a distance.
42.
Jupiter has about 317 times more mass than Earth. What can you infer from this fact? 
a)
That Jupiter’s gravitational force is much weaker than on Earth’s gravitational force.
b)
That Jupiter’s gravitational force is much stronger than Earth’s gravitational force.
c)
That Jupiter’s and Earth’s gravitational forces are equal.
d)
Mass has no effect on the gravitational force between two objects
43.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
44.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
45.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
46.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
47.
Which of the following never changes no matter where in the universe?
a)
weight
b)
force
c)
mass
d)
pounds
48.
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
49.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
50.
Is the force of gravity acting on the bag of potatoes a contact or non-contact force?
a)
contact force
b)
non-contact force

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