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WorksheetsForces & Inertia
Total questions: 62
Worksheet time: 42mins
Name
Class
Date
1.
Who will win this tug of war? What is the net force?
a)
The person on the left with 20 N
b)
The person on the left with 80 N
c)
The people on the right with 20 N
d)
The people on the right with 100 N
2.
Balanced forces do not change...
a)
the motion of the object.
b)
the distance of the object.
c)
the time of the object.
d)
the mass of the object.
3.
What is defined as a push or pull?
a)
force
b)
motion
c)
vector
d)
speed
4.
What are balanced forces?
a)
Forces in the same direction
b)
Forces of the same size in the same direction
c)
forces of the same size in opposite directions that cancel out
5.
What is the unit used to measure force?
a)
Kilogram
b)
Meter
c)
Pascal
d)
Newton
6.
Forces that have a net force of zero have a/an....
a)
Balanced force
b)
Unbalanced force
7.
What is the net force?
a)
5000 N right
b)
4000 N right
c)
40 N left
d)
4000 N left
8.
An _______ force must act on an object for it to CHANGE it's motion
a)
balanced
b)
unbalanced
c)
gravitational
d)
electrical
9.
Unbalanced forces....
a)
cause a change in the motion of an object
b)
do not cause a change in the motion of the object
10.
Are these forces balanced or unbalanced?
a)
balanced
b)
unbalanced
11.
Which of the statements below best describes what is happening in the picture? The man flew out of the car because of...
a)
inertia
b)
kinetic energy
c)
net force
12.
Forces can be added together.
a)
true
b)
false
13.
Kinetic energy is....
a)
the energy of motion
b)
the energy of balanced forces
c)
the energy of heat
d)
the energy of vectors
14.
What is a vector?
a)
It shows a force.
b)
It shows kinetic energy.
c)
It shows who wins in a tug-of-war.
15.
What is the net force?
a)
50 N ------->
b)
<-------- -200 N
c)
250 N -------------->
16.
What is the applied force?
a)
The man pushing on the lawn mower.
b)
The lawn mower's weight.
c)
The force of the lawn mower pushing back on the man.
17.
Newton's 1st law is also called....
a)
friction
b)
inertia
c)
unbalanced forces
d)
Newtons
18.
An object in motion tends to stay in motion unless an ___ force acts on it.
a)
unbalanced
b)
balanced
19.
The tendency of an object to resist a change in motion is...
a)
inertia
b)
kinetic energy
c)
vector
d)
net force
20.
Forces can be transferred from one object to another.
a)
true
b)
false
21.
A force always has a direction.
a)
true
b)
false
22.
Every vector has a direction and a strength or size (magnitude).
a)
true
b)
false
23.
What is the net force on an object?
a)
the sum of all the forces on an object
b)
the negative forces on an object
24.
If two forces are balanced, what is the net force?
a)
zero
b)
negative
c)
positive
25.
What is Newton's First Law known as? The Law of
a)
Friction
b)
Mass
c)
Inertia
d)
Gravity
26.
What is Newton's First Law
a)
F=ma
b)
Every action has an equal and opposite reaction
c)
An object at rest stays at rest, an object in motion stays in motion.
d)
Friction
27.
The tendency of an object to resist a change in its motion
a)
acceleration
b)
inertia
c)
mass
d)
frame of reference
28.
What is the net force?
a)
20 N
b)
0 N
c)
400 N
d)
40 N
29.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
30.
If one object has twice as much mass as another object, it also has twice as much...
a)
inertia
b)
velocity
c)
acceleration due to gravity
d)
DO NOT PUSH ME
31.
Which has more Inertia? (so need more force to move)
a)
Truck
b)
Ant
c)
A cat
d)
A skateboard
32.
Which type of force(s) will cause a change in an object's motion?
a)
gravity
b)
zero net force
c)
balanced forces
d)
unbalanced forces
33.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
34.
What is the name for a push or pull?
a)
A movement
b)
A force
c)
Speed
d)
Density
35.
Objects with greater _________ also have greater inertia.
a)
speed
b)
mass
c)
temperature
d)
friction
36.
An object in motion tends to stay in motion unless an ___ force acts on it.
a)
unbalanced
b)
balanced
37.
The law of inertia (Newton’s First Law) applies
a)
to both moving and nonmoving objects
b)
only to moving objects
c)
only to objects that are not moving
38.
What kind(s) of objects have inertia?
a)
all objects with mass
b)
only objects at rest
c)
only objects in motion
d)
only objects whose motion is being changed
39.
Objects at rest remain at rest and objects traveling at a steady rate in a straight line continue that way until a _________acts on them.
a)
force
b)
velocity
c)
inertia
d)
acceleration
40.
What is the unit that measures force?
a)
Weight
b)
Net force
c)
Newton
d)
Kilogram
41.
Why is the net force 0 in the image?
a)
Because the elephants are the same size
b)
Because they are both pulling the same amount of force in opposite directions
c)
Because they are elephants
d)
Because they are pulling away from each other.
42.
Which of these best describes friction?
a)
A rubbing force.
b)
Something that is slippery.
c)
Gravity.
d)
Movement across a smooth surface.
43.
What force pushes up on the vase and keeps it from falling through the table?
a)
gravity
b)
normal force
c)
friction
d)
applied force
44.
What type of force is this man using to push his grocery cart?
a)
Normal Force
b)
Gravity
c)
Air Resistance
d)
Applied Force
45.
Forces that have a net force of zero Newtons
a)
Balanced force
b)
Unbalanced force
46.
The sum of all forces acting on an object.
a)
Contact Force
b)
Balanced Force
c)
Unbalanced Force
d)
Net Force
47.
What will cause an object to move?
a)
Applied forces
b)
Balanced forces
c)
Unbalanced forces
48.
What force holds the planets in motion around the sun?
a)
Magnetic
b)
Electrical
c)
Gravitational
d)
Air Resistance
49.
Friction is a force that slows down or stops motion when two objects are in contact and rub together.
a)
True
b)
False
50.
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
51.
If a car is traveling faster and faster down a hill, you can be sure that-
a)
only gravity is acting on the car
b)
there is no friction acting on the car
c)
the net force on the car is 0
d)
unbalanced forces are acting on the object
52.
Balanced forces causes
a)
speed of an object
b)
change in motion
c)
no change in motion
d)
no friction on object
53.
If an object is not moving the forces acting upon it are _____________
a)
unbalanced
b)
weak
c)
balanced
d)
Hulk Smash!
54.
Are forces balanced or unbalanced when a marble rolls down a ramp?
a)
Balanced
b)
Unbalanced
55.
Are forces balanced or unbalanced when a plane is moving at a constant speed in a straight line?
a)
Balanced
b)
Unbalanced
56.
Are forces balanced or unbalanced when skateboarding down a ramp?
a)
Balanced
b)
Unbalanced
57.
Are the forces acting on the rope balanced or unbalanced?
a)
Balanced
b)
Unbalanced
58.
Are the forces acting on the rope balanced or unbalanced?
a)
Balanced
b)
Unbalanced
59.
A car moves in a straight line at a constant speed (same speed). Are the forces on the car balanced or unbalanced?
a)
balanced
b)
unbalanced
60.
A car moves in a curved line at a constant speed (same speed). Are the forces on the car balanced or unbalanced?
a)
balanced
b)
unbalanced
61.
A car moves in a straight line while speeding up. Are the forces on the car balanced or unbalanced?
a)
balanced
b)
unbalanced
62.
A car moves in a straight line while slowing down. Are the forces on the car balanced or unbalanced?
a)
balanced
b)
unbalanced
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