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Forces.

Total questions: 50

Worksheet time: 34mins

Name
Class
Date
1.

What is force in physics?

a)

A power in star wars

b)

A push or pull on an object

c)

A stop on an object

d)

The start of an object

2.

What can force do to an object?

a)

Accelerate an object

b)

Slow down an object

c)

Have the object remain in place

d)

Have the object change shape

e)

All of the above

3.

What is the measure of force?

a)

Newtons

b)

Light years

c)

Inches

d)

Gallons

4.

What is the unit for FORCE?

a)

N (Newtons)

b)

lbs (pounds)

c)

g (grams)

d)

m/s (meters per second)

5.
If these boys 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.
6.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
7.
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
8.
This type of force resist motion between two surfaces that are pressed together
a)
contact
b)
gravity
c)
friction
9.

What type of force was at work in the parachute?

a)

elastic spring force

b)

frictional force (air resistance)

c)

magnetic force

d)

gravitational force

10.
a)
Balanced
b)
Unbalanced
11.
a)
Balanced
b)
Unbalanced
12.

___________ is an opposing force that makes objects in motion slow down.

a)

force

b)

speed

c)

friction

d)

mass

13.

The girls in this picture represent ________ forces (or 2 objects in equilibrium). 

a)
kinetic
b)
balanced
c)
unbalanced
d)
chemical
14.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger 
b)
smaller 
c)
equal 
15.

Balanced Force

a)

When forces are balanced, there is no change in motion

b)

When two forces act upon each other in opposite directions, and they are both the same size.

c)

Equal in size and opposite in direction

d)

Occurs when objects change in motion and can happen in two different ways.

16.

Which image is an example of a balanced force?

a)

Image 1

(Top Image)

b)

Image 2

(Bottom Image)

17.

Which boy will have an easier time getting down the hill?

a)

Boy A , because he is experiencing less friction than boy B.

b)

Boy B, because he is experiencing more friction than boy A.

18.
You and your dad are moving the couch from one side to another. Your dad pushes with a force of 35 N to the right and you push with a force of 25 N right. What is the net force on the couch?
a)
60 N right
b)
10 N left
c)
60 n right
d)
50 N left
19.
A wheeled cart is moving to the right at a constant speed.  Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?
a)
Balanced Forces, Constant Speed
b)
Balanced Forces, Acceleration
c)
Unbalanced Forces, Constant Speed
d)
Unbalanced Forces, Acceleration
20.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
21.

When an object moves in a straight line, which statement is true?

a)

when the object moves at a constant speed, the resultant force is zero

b)

when the object accelerates, the resultant force is zero

c)

when the object moves at a constant speed, the forward force is greater than the resistive force

d)

the object requires a resultant force in order to move at a constant speed

22.
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. 
23.

Calculate the resultant force.

a)

40N, Left

b)

40N, Right

c)

0N, Balanced

d)

75N, Right

24.
The overall force acting on an object after all the forces are combined is called a 
a)
net force
b)
unbalanced force
c)
balanced force
25.
When the resulting force is greater than zero what type of force is acting on the objects? 
a)
balanced force
b)
unbalanced force
26.

The sum of all forces acting on an object is

a)

balanced.

b)

unbalanced.

c)

friction.

d)

the net force.

27.
If there are two forces going in the same direction how would you find the net force?
a)
Subtract
b)
Add
c)
Neither
d)
Multiply
28.
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
29.
What is 'drag' another name for?
a)
dressing up
b)
air resistance
c)
friction
d)
weight
30.
What are balanced forces?
a)
forces of the same size, in opposite directions
b)
the same size in the same direction
c)
forces in opposite directions
d)
forces at right angles to each other
31.
Two forces on an object are in the same direction. How do we calculate the resultant force?
a)
take away one from the other
b)
multiply them
c)
divide one by the other
d)
add them together
32.
What is the net force?
a)
17 N Right
b)
3 N Right
c)
3 N Left
d)
17 N Left
33.

The force you get when a material is being

     stretched

a)

Friction

b)

Compression

c)

Tension

d)

Magnetism

34.

The force you get when a material is being

    squashed

a)

Friction

b)

Compression

c)

Tension

d)

Magnetism

35.

The force that enables compasses to work

a)

Friction

b)

Compression

c)

Tension

d)

Magnetism

36.

The force that holds the particles in a nucleus

    together

a)

Gravity

b)

Nuclear

c)

Air resistance

d)

Electrostatic

37.

The force you get when an object moves

    through air

a)

Gravity

b)

Nuclear

c)

Air resistance

d)

Electrostatic

38.

The force that exists between all objects

     with mass

a)

Gravity

b)

Nuclear

c)

Air resstance

d)

Electrostatics

39.

The force you get between two charged

    objects

a)

Gravity

b)

Nuclear

c)

Air resistance

d)

Electrostatics

40.
What is the net force?
a)
10 N
b)
0 N
c)
25 N
d)
1 N
41.
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.
42.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
43.
What force ultimately slows the roller coaster to a stop?
a)
Applied
b)
Normal
c)
Friction
d)
Magnetic
44.

Which has more mass, a kilogram of lead or a kilogram of iron?

a)

a kilogram of iron

b)

a kilogram of lead

c)

they both have the same mass

45.

Compared to its mass on Earth, the mass of a 10-kg object on the moon is

a)

more

b)

less

c)

the same

46.

The force required to maintain an object at constant speed in free space (no air resistance or gravity) is equal to

a)

zero

b)

the mass of the object

c)

the weight of the object

d)

the force required to stop it

47.

Equilibrium occurs when

a)

all the forces acting on an object are balanced

b)

the net force on the object is zero

c)

an object is at rest

d)

an object moves at constant velocity

e)

all of these are correct

48.

The weight of a person can be represented by a vector that acts

a)

straight up

b)

straight down

c)

to the left

d)

to the right

49.

A pulling force is transmitted through a rope. What is the best name for this force?

a)

tension

b)

friction

c)

normal

d)

weight

50.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down

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