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Worksheets2nd Period Forces Test
Total questions: 100
Worksheet time: 2hrs 22mins
Name
Class
Date
1.
What happens when two forces act in the same direction (and on the same object)?
a)
They cancel each other out
b)
They are added together
c)
Their sum is divided by two
2.
The tendency of an object to resist change in its motion is known as
a)
mass.
b)
inertia.
c)
force.
3.
The greater the mass of an object,
a)
the easier the object starts moving.
b)
the greater its inertia.
c)
the more space it takes up.
4.
One way to increase acceleration is by
a)
increasing mass.
b)
decreasing mass.
c)
decreasing force.
5.
The force that one surface exerts on another when the two rub against each other is called
a)
friction.
b)
inertia.
c)
gravity.
6.
When the only force acting on a falling object is gravity, the object is said to be
a)
stationary.
b)
a projectile.
c)
in free fall.
7.
Air resistance is a type of
a)
motion.
b)
acceleration.
c)
friction
8.
Two figure skaters who push off of each other will move at the same speed if
a)
they push with the same force.
b)
there is no air resistance.
c)
they have the same mass.
9.
Forces can be added together only if they are
a)
acting on the same object.
b)
balanced forces.
c)
unaffected by gravity.
10.
The achievement of lifting a rocket off the ground and into space can be best explained by
a)
Newton's first law.
b)
Newton's second law.
c)
Newton's third law.
11.
In physical science, a push or a pull is called a(n)
a)
force.
b)
acceleration.
c)
motion.
12.
Objects falling through air experience a type of friction called
a)
terminal velocity.
b)
air resistance.
c)
free fall.
13.
According to Newton's third law of motion, when a hammer strikes and exerts force on a nail, the nail
a)
creates friction with the hammer.
b)
exerts an equal force back on the hammer.
c)
moves at constant speed.
14.
Unbalanced forces maintain motion at constant velocity.
a)
True
b)
False, Balanced
15.
The property of matter that resists a change in motion is called inertia.
a)
True
b)
False, gravity
16.
According to Newton's second law of motion, force equals mass times weight.
a)
True
b)
False, acceleration
17.
The force of gravity decreases as the masses of the objects increase.
a)
True
b)
False, increases
18.
Newton's third law of motion explains that forces act alone.
a)
True
b)
False, in pairs
19.
The overall force on an object after all the forces are added together is called the ________ force.
a)
total
b)
net
c)
sum
20.
A person traveling in a car that stops suddenly keeps moving forward due to ________.
a)
gravity
b)
friction
c)
inertia
21.
The downward force acting on an object in free fall is the force of ________.
a)
gravity
b)
friction
c)
air resistance
22.
If the action force of a bat striking a ball accelerates the ball in one direction, the reaction force accelerates the bat in the ________ direction.
a)
opposite
b)
same
c)
equal
23.
The momentum of a roller skater is not conserved because _______ acts on the skates.
a)
gravity
b)
inertia
c)
friction
24.
Friction acts in a direction ______ to an object's direction of motion.
a)
equal
b)
opposite
c)
diagonal
25.
What does the head of each arrow indicate?
a)
size of the force
b)
direction of the force
c)
direction of motion
26.
The force that pulls falling objects towards Earth is called
a)
gravity
b)
free fall
c)
air resistance
27.
What does the width of each arrow indicate?
a)
direction of the force
b)
direction of movement
c)
size of the force
28.
Which of the following is an example of increasing friction?
a)
waxing a pair of skis
b)
adding grease to gears on a bike
c)
throwing sand on an icy driveway
29.
When an unbalanced force acts on an object, the force...
a)
changes the motion of the object.
b)
is canceled by another force.
c)
does not change the motion of the object.
d)
is equal to the weight of the object.
30.
The resistance of an object to any change in its motion is called...
a)
inertia.
b)
friction.
c)
gravity.
d)
weight.
31.
Balanced forces are equal forces acting on an object in opposite directions.
a)
True
b)
False
32.
What force makes it less likely for a person to slip on a dry sidewalk as opposed to an icy sidewalk?
a)
air resistance
b)
friction
c)
inertia
d)
momentum
33.
Which of the following is determined by the force of gravity?
a)
weight
b)
momentum
c)
mass
d)
distance
34.
A 50 passenger-car freight train and an 8 passenger-car passenger train are stopped on parallel tracks. It is more difficult to move the freight train than the passenger train. What accounts for this fact?
a)
terminal velocity
b)
inertia
c)
centripetal force
d)
speed
35.
Which of the following is an example of exerting a force?
a)
a child running through a field
b)
a train speeding down a tack
c)
a carpenter hammering a nail
d)
an airplane soaring through the sky
36.
What happens when two forces act in the same direction?
a)
They cancel each other out.
b)
The stronger one prevails.
c)
They add together.
d)
Their sum divided by two is the total force.
37.
The tendency of an object to resist change in its motion is known as...
a)
mass
b)
inertia
c)
force
d)
balance
38.
The greater the mass of an object,
a)
the easier the object starts moving.
b)
the greater its inertia.
c)
the more balanced it is.
d)
the more space it takes up.
39.
The force of gravity on a person or object on the surface of a planet is called...
a)
mass
b)
terminal velocity
c)
weight
d)
free fall
40.
One way to increase acceleration is by....
a)
increasing mass.
b)
decreasing mass.
c)
decreasing force.
d)
increasing both force and mass proportionally.
41.
The force that one surface exerts on another when the two rub against each other is called...
a)
friction
b)
acceleration
c)
inertia
d)
gravity
42.
Which of the following is an example of rolling friction?
a)
your shoes on a sidewalk as you walk
b)
bike tires on the road as you ride
c)
a boat on the water as it sails
d)
two hands rubbing together
43.
The achievement of lifting a rocket off the ground and into space can be explained by...
a)
Newton's first law
b)
Newton's second law
c)
Newton's third law
44.
What is required for a rocket to lift off into space?
a)
thrust that is greater than Earth's gravity
b)
mass that is greater than Earth's
c)
very little air resistance
d)
more velocity than fricti
45.
In science, a push or pull is called a(n)
a)
force
b)
acceleration
c)
inertia
d)
motion
46.
The amount of matter in an object is called its...
a)
inertia.
b)
mass.
c)
force.
d)
balance.
47.
Which of the following is an example of increasing friction intentionally?
a)
waxing skis.
b)
adding grease to gears on a bike.
c)
throwing sand on an icy driveway
d)
oiling a squeaky door
48.
The force that pulls falling objects toward Earth is called...
a)
gravity.
b)
free fall.
c)
acceleration.
d)
air resistance.
49.
According to Newton's third law of motion, when a hammer strikes and exerts force on a nail, the nail...
a)
creates a friction with the hammer.
b)
disappears into the wood.
c)
exerts an equal force back on the hammer.
d)
moves at a constant speed.
50.
The unit for force is the..
a)
newton.
b)
meter.
c)
kilogram.
d)
pound.
51.
Balanced forces acting on an object...
a)
always change the object's motion.
b)
sometimes change the object's motion.
c)
never change the object's motion.
d)
are not related to motion.
52.
The total momentum of a group of objects is conserved unless..
a)
outside forces do not act on the objects.
b)
outside forces act on the objects.
c)
the objects are moving.
d)
there are more than two objects.
53.
According to Newton's second law of motion, weight depends on an object's mass and the net force acting on the object.
a)
True
b)
False (Acceleration)
54.
Newton's third law of motion states for every action there is an equal, by opposite reaction.
a)
True
b)
False (Unbalanced Force)
55.
A full grocery cart requires more force to push than an empty cart.
a)
Newton's First Law
b)
Newton's Second Law
c)
Newton's Third Law
56.
A pencil on a table will stay there until someone picks it up.
a)
Newton's First Law
b)
Newton's Second Law
c)
Newton's Third Law
57.
A fireman turns on a hose and is knocked backwards.
a)
Newton's First Law
b)
Newton's Second Law
c)
Newton's Third Law
58.
The force that opposes the motion of two surfaces sliding past each other is called ___________.
a)
acceleration
b)
inertia
c)
friction
d)
unbalanced
59.
What is the net force?
a)
40 N left
b)
0 N Balalnced
c)
400 N right
d)
40 N right
60.
What is it called when the force of gravity is acting on an object?
a)
Weight
b)
Sliding Friction
c)
Momentum
d)
Projectile Motion
61.
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.
62.
With unbalanced forces, the object will move in the direction of the _______ force.
a)
larger
b)
smaller
c)
equal
63.
A force is...
a)
a push
b)
a pull
c)
a push or pull
d)
a push or pull with a specific magnitude and direction
64.
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)
20N
b)
40N
c)
10N
d)
70N
65.
Forces that have a net force of zero and the object's movement is not effected.
a)
Balanced Forces
b)
Unbalanced Forces
66.
Which law explains why when you put a book on a table the table pushes on the book
a)
3rd law
b)
4th law
c)
1st law
d)
2nd law
67.
Accelerations are produced by
a)
forces.
b)
velocities.
c)
accelerations.
d)
masses.
68.
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
69.
According to Newton's Third Law of Motion, when a hammer strikes and exerts a force on a nail, the nail
a)
disappears into the wood
b)
moves at a constant speed
c)
exerts an equal and opposite force back on the hammer
d)
creates a balanced force
70.
What is Newton's First Law known as? The Law of
a)
Inertia
b)
Mass
c)
Gravity
71.
What is the coefficient of static friction if it takes 44 N of force to move a box that weighs 86 N?
a)
0.78
b)
0.51
c)
0.78 N
d)
0.58 N
72.
A car has a mass of 2020 Kg and has a coefficient of friction between the ground and its tires of .75. What force of friction can it exert on the ground?
a)
15000 N
b)
7000 N
c)
4500 N
d)
8500 N
73.
What is the net force
a)
10 N
b)
0 N
c)
25 N
d)
1 N
74.
The force that opposes the motion of two surfaces sliding past each other is called ___________.
a)
acceleration
b)
inertia
c)
friction
d)
unbalanced
75.
A ball is rolled across four different surfaces with the same force. Which surface will slow the movement of the ball most?
a)
tile floor
b)
paved road
c)
grassy field
d)
cement sidewalk
76.
Forces that have a net force that is not zero ( object will move).
a)
Balanced force
b)
Unbalanced force
77.
The force that acts on an object to stop its motion.
a)
Speed
b)
Friction
78.
What is the net force?
a)
400 N Up
b)
400 N Down
c)
- 400 N Down
d)
800 N Down
79.
Keep in mind F=MA
If you are pushing a 1000 kg car at 0.5 m/s2, how many newtons would that be?
If you are pushing a 1000 kg car at 0.5 m/s2, how many newtons would that be?
a)
2000 N
b)
60N
c)
500 N
d)
12 N
80.
What Unit do we Measure Force in?
a)
Newtons
b)
Joules
c)
Force
d)
Don't know
81.
What is Newton's First Law State?
a)
Something about Interia
b)
For every action, there is an opposite or equal reaction
c)
object will remain at rest or in uniform motion in a straight line unless acted upon by an external force. It may be seen as a statement about inertia, that objects will remain in their state of motion unless a force acts to change the motion.
d)
Who is Newton?
82.
Newton's Third Law?
a)
For every action, there is an opposite and equal reaction
b)
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
c)
Don't know
d)
What?
83.
F=Ma
An object of mass 300 kg is observed to accelerate at the rate of 4 m/s2. Calculate the force required to produce this acceleration.
An object of mass 300 kg is observed to accelerate at the rate of 4 m/s2. Calculate the force required to produce this acceleration.
a)
120 N
b)
12 N
c)
1200 N
d)
2 N
84.
A force of 20 N acts upon a 5 kg block. What is it's acceleration
a)
4 m/s2
b)
100 m/s2
c)
10 m/s2
d)
5 m/s2
85.
F=Ma
A force of 200 N is exerted on an object of mass 40 kg that is located on a sheet of perfectly smooth ice.Calculate the acceleration of the object.
A force of 200 N is exerted on an object of mass 40 kg that is located on a sheet of perfectly smooth ice.Calculate the acceleration of the object.
a)
5 m/s2
b)
800 m/s2
c)
80 m/s2
d)
1.32 m/s2
86.
F=MA
An object of mass 10 kg is accelerated upward at 2 m/s2. What force is required?
An object of mass 10 kg is accelerated upward at 2 m/s2. What force is required?
a)
20 N
b)
2 N
c)
5 N
d)
0 N
87.
How many Laws does Newton have?
a)
4
b)
6
c)
1
d)
3
88.
What's the formula for acceleration, considering it F=Ma?
a)
A= FM
b)
A= MF
c)
A= M/F
d)
M=A/F
89.
What is the formula for force?
a)
F=M/A
b)
F=MA
c)
F=AX
d)
what is force?
90.
what is the formula for finding the mass?
a)
M=FA
b)
M= F/A
91.
1000 kg is the...
a)
mass
b)
weight
c)
force
d)
acceleration
92.
20 N is the
a)
mass
b)
weight
c)
force
d)
acceleration
93.
45 m/s2 is the...
a)
Mass
b)
Force
c)
Acceleration
d)
weight
94.
Unit of mass
a)
m/s 2
b)
m/s
c)
newtons
d)
kg
95.
A unbalanced force means that an object is
a)
zero net force
b)
motion of an object
c)
sitting still
d)
object at rest
96.
An explosion in the action force and the cannonball shooting out is the reaction force is an example
a)
1st law
b)
second law
c)
3rd law
d)
1st and 2nd
97.
If an object has a net force of O N, it is
a)
unbalanced
b)
balanced
c)
not moving
98.
Why would you weigh less on the moon?
a)
less air
b)
less sunlight
c)
there is no water on the moon
d)
less gravitational pull
99.
Force = Mass x Acceleration
A 50 pound dog pushed by his owner at 5 m/sec has how much force?
A 50 pound dog pushed by his owner at 5 m/sec has how much force?
a)
55 N
b)
250 N
c)
10 N
d)
10000 N
100.
Which object has the greatest inertia?
a)
a tennis ball
b)
a beach ball
c)
a bowling ball
d)
a volleyball
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