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Duplicate of LCHS Newton's Laws 2021 Flashcards | StudBud
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Duplicate of LCHS Newton's Laws 2021
Duplicate of LCHS Newton's Laws 2021
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AP Physics 1, High School physics, Newton's Laws (Forces and Motion)
Flashcards
70 cards
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Practice quiz
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Host live
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Questions
70
Answers
1
What force is shown here?
applied
air resistance
gravity
spring
2
What is the net force acting on the boat? (upthrust is the same as normal force)
800 N right
3400 N left
28,400 N down
800 N left
3
What is the net force on this object?
11 N, right
8 N, right
5 N, left
5 N, right
4
What is the size of the friction force
400 N
1500 N
1000 N
1500 N
5
immediately AFTER hitting an air-hockey puck on a frictionless plane, it will generally ___
increase its inertia
move with constant velocity
experience a net force
move with increasing velocity
6
What force is shown here?
gravity
friction
applied
tension
7
What force is shown here?
spring
thrust
air resistance
magnetic
8
A block rests on an inclined surface as shown. Is there a non-zero net force on the block?
Yes
No
9
Whenever there is ______ acting on an object, the object accelerates in that direction.
net force
inertia
momentum
drag
10
Which direction does friction and air resistance always act in?
Parallel to the Earth's surface
With the motion of the object
Against the motion of the object
Downwards towards the centre of the Earth
11
If friction is negligible, the net force on the cart is...
mgsinθ
Tsinθ
T
Tcosθ
12
A sled going down a hill represents which type of friction?
Kinetic
Rolling
Fluid
Static
13
Which way will the truck accelerate due to forces from the person in the picture
up
none
left
right
14
Which letter represents thrust?
A
C
D
B
15
A sea turtle swimming again the current is an example of which type of friction?
fluid
kinetic
rolling
static
16
An object in motion will stay in motion unless acted upon by an unbalanced force.
The third law of motion
The fourth law of motion
The first law of motion
The second law of motion
17
Which graph correctly depicts Newton's 2nd Law for a constant force applied to varied masses?
None. Neither graph concurs with Newton's 2nd Law
A) because mass is directly related to acceleration
A) because the relation is linear
B) because mass is inversely related to acceleration
18
In absence of friction...
The tires would slip
The person would go to the barber
The person will accelerate
This person will not accelerate
19
If a balloon pushes air molecules inward, then Newton's 3rd Law states that ________.
the air particles would push outward on the balloon
the balloon would lose all its air
the number of air particles would decrease
the air molecules would lose mass
20
The force acting on an object is equal to the mass of that object times its acceleration.
The first law of motion
The fourth law of motion
The second law of motion
The third law of motion
21
Newton's 3rd Law states that if a baseball pushes a bat inward, then that bat would ______.
continue to push inward
push the baseball outward
be unable to push back
break due to the force of friction
22
The picture is an example of which law?
The fourth law of motion
The third law of motion
The second law of motion
The first law of motion
23
What is the resultant force in this diagram?
150 N
50 N
100 N
200 N
24
A man standing in an elevator that accelerates upwards...
Experiences a net force
experiences greater Normal force than gravity
has zero net force acting on them
would register a lighter weight standing on a scale
25
What is the mass of the boat?
80kg
2840kg
2500kg
25000N
26
If an astronaut slowly drifts away from the ISS, how might she be able to return to ISS
by staying in one place and letting gravity pull her back
by moving her arms as though she were swimming
by throwing something heavy towards the ISS
by throwing something heavy away from the ISS
27
What is the size and direction of the resultant force?
50 N down
10 N upward
60 N upward
-10 N upward
28
Which letter represents weight
D
C
B
A
29
A bug splats on the windshield of a moving vehicle. The force on the bug from the windshield
is zero
Is equal in magnitude to the force felt by the windshield
Is less than the force acting on the windshield
Is greater than the force acting on the windshield
30
A steak rests on a plate on a table. Which is a true comparison of normal forces
The table pushes the plate > the plate pushes the table
The steak pushes the plate < the table pushes the plate
The steak pushes the plate > the table pushes the plate
The table pushes the steak > the table pushes the plate
31
A rotating bicycle tire is an example of which type of friction?
rolling
kinetic
static
fluid
32
What is terminal velocity?
Mass = weight: Object falls at a constant speed
Weight = air resistance: Object falls at constant speed
Weight is pulling object down, it falls at a constant speed
Weight > air resistance: Object falls at a constant speed
33
Compare magnitudes of normal force to gravitational force.
Normal Force < Weight
Normal force = weight
Normal force > weight
gravity is only greater than normal if it slides
34
Objects continue moving indefinitely unless some external influence affects their motion is aka
motion
gravity
inertia
force
35
Based on the forces acting on this object, predict the direction of acceleration.
Left
Right
No Acceleration
Down
36
What will the result of these forces be?
The plane slows down
The plane moves up
The plane drops from the sky
The plane speeds up
37
What force is shown here?
magnetic
gravity
thrust
tension
38
Acceleration is . . .
The rate at which gravity changes
The rate at which friction changes
the rate at which velocity changes.
The rate at which cars go
39
This slows down every objects speed that makes contact with a surface?
Inertia
Velocity
Friction
Speed
40
A projectile baseball after it reaches maximum height
has no net force acting on it
is accelerating more rapidly than it did on the way up
has a net force acting on it
looks like a cube
41
What is the size of the force that causes acceleration (resultant force)?
400 N
200 N
600 N
800 N
42
This is needed to determine if an object is in motion?
Reference point
Friction
Gravity
Speed
43
What force is shown here?
fluidity
spring
friction
air resistance
44
Look at the picture. According to Newton's 3rd law, which force is greater?
The action force, finger on wall
there is no force
the reaction force, wall on finger
the forces are equal
45
When a car slams its brakes, occupants lunge forward because
They had inertia
The force forward was inertia
the car was old
They had a net force forward
46
Based on the forces acting on this object, predict the direction of acceleration.
Right
Down
No Acceleration
Left
47
On the moon there is no atmosphere. What is true about falling objects acceleration?
Largest weight objects = greatest acceleration
All object have the same acceleration
Higher mass objects = greatest acceleration
Biggest surface area objects = smallest acceleration
48
What is the equation linking weight (W), mass (m) and gravitational field strength (g)?
g = W x m
W = m ÷ g
m = W x g
W = m x g
49
A car stopped on a hill represents which type of friction?
rolling
kinetic
fluid
static
50
Which letter represents air resistance?
D
C
A
B
51
A man standing in an elevator moving with constant speed upwards...
Experiences a net force
has zero net force acting on them
experiences greater Normal force than gravity
has a dashing mustache
52
In the image shown, the foot exerts ______ on the ball to move it through the air.
gravity
force
mass
inertia
53
Why wouldn't that same astronaut be able to get back to the ISS by using a swimming motion?
there is no air to resist her motion and propel her forward
it would cause her to drift farther away
the air in space is too dense to move through
there is not enough gravity present
54
Balanced forces cause
A change in movement
No change in velocity
No change in acceleration
A change in velocity
55
If the bug & windshield apply equal & opposite forces, then why does the bug smash into it?
there is a lack of air resistance
the car's acceleration is less than the bug's mass
the windshield actually had a greater force
the car's acceleration is greater than the bug's mass
56
Which direction does weight always act in?
Downwards (towards the centre of the Earth)
Towards the surface the object is placed on
Sideways (left or right)
Upwards (away from the Earth's centre)
57
Which will accelerate more, a 2-kg object or a 5-kg object, when a 20-N force is applied?
They'll accelerate at the same rate since the force is equal
The 2-kg object will accelerate more
The 5-kg object will accelerate more
Neither will accelerate
58
Which of these force diagrams shows an object with uniform motion?
D
B
A
C
59
If a player kicks a soccer ball to the left, what would be the equal and opposite reaction?
the soccer ball would move upwards in the air
the ground would push upwards on the player's foot
the soccer ball would push right on the player's foot
gravity would pull the ball downwards
60
All familiar motions are subject to two ever-present forces -
gravity and motion
friction and motion
friction and gravity
motion and mass
61
Why are you able to accelerate forwards when starting to walk?
there's an equal & opposite force between your two feet
ground creates an equal & opposite force against your foot
your body leans forward creating momentum
no acceleration occurs when you walk
62
What force is shown on the rope?
tension
friction
spring
gravity
63
This equals Distance / Time
Speed
Force
Acceleration
Mass
64
Calculate the Newtons of NET force in the picture.
32 N
7 N
25 N
39 N
65
A cart is pulled with tension, T at an angle θ. Normal force from the ground...
Is greater than the cart's weight
is less the cart's weight
is equal to the cart's weight
is equal to T
66
Force equals ?
mass x velocity
mass x acceleration
mass x speed
mass x time
67
What force is shown here?
tension
spring
fluid
gravity
68
This is needed to change the movement or motion of a non-moving object?
Unbalanced force
Friction
Speed
Balanced force
69
In a game of tug-o-war, what's the equal & opposite force to Team A pulling right on the rope?
the force of friction between the ground and their shoes
Team B's hands pulling left on the rope
the force of the rope against Team B's hands
the rope's opposite force pulling on Team A's hands
70
Why would you rather be hit by a tennis ball than a bowling ball dropped from the same height?
Tennis ball will have a lower velocity
Bowling ball has greater inertia
Bowling ball has a greater volume
Tennis ball experiences more air resistance
