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Forces and Newton's Laws Physics Flashcards | StudBud
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Forces and Newton's Laws Physics
Forces and Newton's Laws Physics
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#Forces #physics #chapter2 #force
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Answers
1
Friction car experiences during a skid
rolling
static
air resistance
kinetic
2
A force that acts at a distance is
spring
air resistance
normal
magnetic
3
equals the normal force (for an object on a ramp)
Force of friction
mgsinΘ
Force of gravity
mgcosΘ
4
The object is suspended above the ground. The tension force on rope B is
80 N up
120 N up
200 N down
200 N up
5
Newton's Second Law
a=F/m
m=p/v
p=m/v
F=m/a
6
What is the Force that pulls objects towards Earth
Gravity
Field Force
Contact Force
Electromagnetic Force
7
Force is Proportional to Mass and Acceleration
Contact Force
Newtons Third Law
Newtons Second Law
Newtons First Law
8
The net force below is
<- 100 N
0
<- 50 N
950 N ->
9
Which object experiences the greater force?
Not enough information to determine
The car
The truck
They experience the same force
10
What does an unbalanced force produce?
an acceleration
an equal and opposite balanced force
motion
not enough information to determine
11
The net force below is
300 N ->
<- 600 N
900 N up
0
12
Force exerted on a rope suspending a tire
applied
gravity
tension
air resistance
13
An object at rest stays at rest and an object in motion stays in motion until hit by a force
Newtons Third Law
Inertia
Newtons First Law
Newtons Second Law
14
The force used to push a shopping cart
static friction
gravity
applied
tension
15
Two forces of equal magnitude are exerted on an object. The object is moving. Explanation?
The forces are balanced: the object moves at constant speed
The object speeds up
The object slows down
The object isn't moving; it is stopped
16
A box sits on a ramp at rest. How many forces are acting on it?
4
1
3
2
17
This type of friction is for objects at rest
static
air resistance
rolling
kinetic
18
Which one of these is a Force?
Mass
Inertia
Momentum
Ff
19
When do objects appear to weigh more or less?
Not enough information to answer
When there is a horizontal acceleration
When there is a vertical acceleration
When the object is in equilibrium
20
Which is TRUE about the picture below?
The object is not supported by a surface
The object is speeding up as it travels to the right
The object is moving to the left
The object is slowing down
21
Force that pushes everything toward Earth
Air Pressure
Field Force
Gravity
Magnetic Force
22
Can an object in equilibrium be in motion?
Yes- it is in equilibrium when there is an acceleration
Yes- as long as it is moving at a constant velocity
Not enough information to determine
No- it must be at rest
23
The tendency of an object to resist a change in motion is?
Tension
Magnitude
Inertia
Weight
24
Pick the MOST CORRECT: What 2 objects are involved for the action-reaction forces for the image
Air inside the balloon & the air in the room
Balloon and the air inside it
Balloon and the air IN the room
balloon & air
25
The force exerted by a table on a book at rest on top of the table is
kinetic friction
gravity
normal
applied
26
What do we use to solve for acceleration?
velocity equation
Net force = 0
kinematics
Net Force = ma (N. 2nd Law)
27
For every action, there is an equal and opposite reaction
Newtons Third Law
Newtons Second Law
Mass
Newtons First Law
28
What is the acceleration of this Object?
15 m/s2 , right
45 m/s2 ,left
30 m/s2 ,left
30 m/s2 ,right
29
The object below
Has an applied force of 50 N
Is slowing down
Is moving to the left
Is accelerating to the right
30
This is always the same anywhere in the universe
mass
weight
31
Which is TRUE about the diagram below?
The force of friction equals the applied force
The object is moving to the left
None of these
The object if floating to the surface of the earth
32
A force vector shows
distance and acceleration
velocity and speed
direction and speed
magnitude and direction
33
The net force on the block below is
<- 7 N
11 N ->
<- 6 N
18 N ->
34
The acceleration of an object that has a Mass of 50kg and is being pushed with 100N of Force
2 m/s2
5 m/s2
10 m/ss
.5 m/s2
35
Can solve for it using: F
G
= mg
mass
weight
36
What is TRUE of a kicked football as it travels through the air?
It has inertia
It has a normal force
None of these
The ball has an applied force on it as it travels downward
37
The net force on an object acts in the direction of the motion. This means
The velocity remains constant
The object will slow to a stop
The normal force is greater than gravity
The object will increase in speed
38
ALWAYS acts down a ramp
mgsinΘ
force of friction
force of gravity
mgcosΘ
39
Unit:N
mass
weight
40
Friction for car that is not skidding
air resistance
static
kinetic
rolling
41
Equals the force needed to start an object's motion
static friction
kinetic friction
42
Which is not TRUE in regards to Newton's 1st Law of Motion?
what goes up must come down
an object at rest stays at rest
it's the Law of Inertia
an object in motion stays in motion
43
Friction on a moving object is
static friction
Tension
static electricity
kinetic friction
44
parallel component of gravity (for an object on a ramp)
force of gravity
mgcosΘ
force of friction
mgsinΘ
45
The object pictured below is
sliding over ice to the left at a constant rate
suspended motionlessly from a rope
gliding to the ground at a constant velocity
falling at an increasing velocity
46
Equals the force needed to keep an object moving at a constant velocity
kinetic friction
static friction
47
perpendicular component of gravity (for an object on a ramp)
force of friction
mgsinΘ
force of gravity
mgcosΘ
48
Which is TRUE of the picture below?
Friction force is larger than the applied force
All of the forces are of equal magnitude
Gravity is larger than the normal force
The applied force is larger than the friction force
49
This type of friction is always larger
static
kinetic
50
This type of friction is for objects sliding across a surface
air resistance
rolling
kinetic
static
