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Motion and Forces/Newtons 3 Laws of Motion Flashcards | StudBud
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Motion and Forces/Newtons 3 Laws of Motion
Motion and Forces/Newtons 3 Laws of Motion
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Answers
1
The action/reaction pair that happens when hammering a nail is...
The hammer hits the nail, the nail goes into the board
The right hand pushes on the hammer, the left hand holds the nail
The hammer pushes on the nail, the nail pushes back on the hammer
There is no action/reaction pair in this situation
2
When applying Newton's 2nd Law of Motion, the unit for force is:
none of the above
kg
m/s/s
N
3
Newton's 2nd law shows there is a direct relationship between:
mass and acceleration
force and acceleration
balanced and unbalanced forces
4
Which law? A swimmer pushes water back with her arms, but her body moves forward.
1st
3rd
2nd
5
If the net force acting on an object is zero Newtons, then....
The sum of forces equals more than zero Newtons
The object is in motion
The forces are balanced
Isaac Newton is pushing on the object
6
An object with a mass of 3.0 kg has a force of 9.0 N applied to it. What is the acceleration of the object?
27 kg
3 m/s2
27 m/s2
3 N
7
When more force is applied to an object, it will...
have a greater acceleration
have a smaller acceleration
changing the force on an object does not affect its acceleration
have more mass
8
The purpose of this image is to show:
The action forces are equal and opposite to the reaction forces
That even stick figures can have fun doing physics
F = ma; one force is bigger than the other so there is more acceleration
The net force = O Newtons; there is no movement
9
where do pandas hibernate?
in caves
they do not hibernate
in trees
both red and blue
10
Which of the following would describe an action-reaction force pair in the picture?
A: monkey pushes off tree; R: monkey goes forward
none of the above
A: monkey pushes off branch; R: branch pushes back on monkey
A: monkey pushes off tree; R: tree pushes off ground
11
Isaac Newton began developing his 3 famous laws around...
1900
1650
1500
1700
12
Why does it take more force to accelerate a full grocery cart than an empty one?
The full cart has more mass
You run into air resistance
The full cart is harder to steer
The empty cart has more mass
13
When the penny was at rest on the card, forces were __. A(n) ___ caused the penny to overcome its ___.
strong; weak; motion
balanced; unbalanced; acceleration
unbalanced; balanced; gravity
balanced; unbalanced force; inertia
14
The tendency of an object to resist change in motion
Friction
Newton's Laws
Force
Inertia
15
In Newton's 3rd Law, "equal" means
equal in distance and force
equal in chocolate and vanilla
equal in strength and time
equal in color and number
16
Mass and acceleration
have no impact on acceleration
are crazy physics words that have nothing to do with Newton's Laws
have an inverse relationship when finding acceleration
have a direct relationship when finding acceleration
17
Which of the following is true?
Force = mass/acceleration
It takes more force to accelerate an object with more mass
Acceleration does not depend on the mass of an object; only its force
All of the above
18
When applying Newton's 2nd law of motion, the unit for acceleration is
m/s2
none of the above
kg
N
19
Which of the following statements is true?
This is an example of balanced forces
The net force would be zero Newtons
All of the above
No motion is occurring because the forces are balanced
20
Acceleration
all of the above
is a change in velocity
is a change in speed or direction
can be used to describe when an object slows down
21
An object accelerates 5.0 m/s
2
when a force of 20.0 Newtons is applied to it. What is the mass of the object?
100 kg
4 kg
5 kg
100 N
22
An object with a small mass ________ than an object with a large mass
would be harder to pull with a spring scale
is harder to accelerate
has more inertia
is easier to accelerate
23
Which law? After your parents start the car, they give it more gas and it goes faster
2nd Law
1st Law
3rd Law
24
Which law? A little girl who has been pulling a sled behind her is crying because when she stopped, the sled hit her
2nd
1st
3rd
25
There would be acceleration in this situation
False
True
26
According to Newton's 2nd law, two factors that affect acceleration are
force and mass
mass and inertia
mass and acceleration
force and motion
27
The measure of the amount of matter in an object
gravity
acceleration
force
none of the above
28
When applying Newton's 2nd law of motion, the unit for mass is
none of the above
kg
m/s/s
N
29
Which of the following statements are true?
The mass of the objects in diagram A makes it harder to accelerate the cart
There is less mass in diagram A, so it will be harder to accelerate
The man must apply more force in diagram A to accelerate the cart
The man must apply more force in diagram B to accelereate the cart
30
What
reaction force
pushes on a jumping rabbit's legs?
the air
the ground
gravity
the rabbit's ears
31
The clown is pedaling. Suddenly, his tire hits a hole and the clown falls down to the ground. This is an example of:
A balanced force
Both blue and yellow
Inertia
An unbalanced force
32
The net force illustrated by this picture is:
200 N to the left
300 g to the right
200 g to the left
300 N to the right
33
The man is pushing with 100 N of force. If the applied force increased to 200 N, you could expect:
The speed/acceleration would increase
the mass would increase
the speed/acceleration would decrease
there would be no change in the speed/acceleration
34
A force that counters all types of motion; occurs whenever two surfaces are in contact
friday
friction
freddy
french fries
35
An object with a mass of 2.0 kg accelerates 2.0 m/s
2
when a force is applied to it. What is the amount of the force?
not enough information is given
4 N
4 kg
40 N
36
A change in velocity
force
acceleration
motion
37
What is the action/reaction pair? Action: your foot pushes the soccer ball. Reaction: ______
The soccer ball accelerates forward
The soccer applies an unbalanced force
The soccer ball pushes on your foot with equal and opposite force
Both blue and yellow
38
Which law? A windmill will continue to move as long as there is wind energy to push the blades
3rd Law
1st Law
2nd Law
39
Candy corn was originally called
chicken feed
mustard candy
corn
tri-colored corn
