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Period 7 Unit 8.1- 8.4 Newton's Three Laws of Motion and Momentum Flashcards | StudBud
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Period 7 Unit 8.1- 8.4 Newton's Three Laws of Motion and Momentum
Period 7 Unit 8.1- 8.4 Newton's Three Laws of Motion and Momentum
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Newtons Laws of motion and Momentum Review
Flashcards
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Questions
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Answers
1
The greater the force applied to an object, the _____________ acceleration
greater
lesser
2
Consider a hockey player simply standing on the ice. He'll continue to stand still until something moves him.
True
False
3
What does force mean?
mass
weight
a push or pull on an object
a resting object
4
Newton's Third Law of Motion states that for every action there is an equal and opposite reaction.
False
True
5
An object will move at the same velocity, which means at the same _____ and in the same______
velocity and acceleration
time and place
speed and direction
distance and space
6
Momentum is related to Newtons First Law.
False
True
7
Which of these is NOT one of Newton's Laws?
Each action has an equal and opposite reaction.
An object moves at a constant speed until changed by an external force.
Force is directly proportional to the mass and acceleration of an object.
The weight of an object is determined by its mass and the gravity of earth.
8
Newton's Second Law of Motion is known as___________
F = m x a
Action
Force
Inertia
9
True or False? Inertia is the tendency of an object to continue at rest or in constant motion.
True
False
10
Mass is measured with a ___________________.
metric ruler
triple beam balance
spring scale
force meter
11
True or False: Momentum is a scalar.
True
False
12
An object that is MOVING will keep moving with constant_____________.
acceleration
velocity
deceleration
rest
13
Which one of Newton's laws is best demonstrated in the picture?
3rd = the law of action-reaction
1st = the law of inertia
2nd = the law of acceleration
14
If Force = 8N and Acceleration = 2 m/s
2
, what is the Mass ?
16 kg
4 kg
28 kg
82 kg
15
Newton's 3rd Law states that forces must ALWAYS occur in _______.
Pairs
Reactions
Earth
Actions
16
Newton’s second law says that when an _____ force is applied to a _____, it causes it to_____.
unbalanced, mass, accelerate
mass, acceleration, balanced force
force, mass, acceleration
acceleration, force, mass
17
How does momentum affect an object?
Both
None of the above
The more momentum the farther it will go
The more momentum the harder it is to stop
18
The units for a= ____________
m/s/s
m/s
kg
N
19
As mass increases, gravitational force _____.
decreases
disappears
increases
20
When an object's motion changes, the forces are...
balanced
ridiculous
unbalanced
valenced
21
If the same force is applied to an object with a large mass, it will have a _____ acceleration.
smaller
larger
22
Which of the following has the most momentum?
an ant traveling at 0.005 m/s
a large tractor trailer truck moving 15 m/s
a small car moving 15 m/s
the same tractor trailer truck moving 3 m/s
23
What is Mass?
the number of molecules in an object.
the weight of the water standard molecule.
The amount of matter in an object.
the amount of mass-produced in the chemical equation.
24
True or False
: All objects exert a gravitational force on other objects because they have mass.
TRUE
FALSE
25
What is the units for momentum?
kg*m/s
km*g/s
km*g/v
ks*m/g
26
What is the momentum of a 15000kg train traveling at 70 m/s?
1050 kg m/s forward
1,050,000 kg m/s forward
214.23 kg m/s forward
525,000 kg m/s forward
27
An object that is NOT MOVING, or is at ______________, will stay at__________.
velocity
rest
acceleration
deceleration
28
How do you calculate momentum?
m=mv
m=v/p
p=mv
m=pv
29
How does the momentum of an object change if the object’s velocity doubles?
the momentum halves
the momentum increases by 4
the momentum decreases by 4
the momentum doubles
30
Unbalanced force are...
unequal in size and/or opposite in direction
equal in size and/or opposite in direction
unequal in size and not opposite in direction
opposite in direction
31
After a firecracker falling through the air explodes, the net momentum of its fragments
remains the same
is zero
increases
decreases
32
What property of an object determines how much inertia it has?
mass
gravity
weight
force
33
Which is not one of Newton's laws?
An object in motion stays in motion an object at rest stays at rest unless
you miss 100% of the shots you dont take
Every action has an equal and opposite reaction
netforce acting on an object causes object to accelerate In the direction
34
The units for m =________
kg
m/s
m/s/s
N
35
The symbol for momentum in physics is the letter _____.
P
T
J
M
36
Newton's First Law of Motion is known as the LAW OF_________________
Force
Action
Inertia
Reaction
37
Who created Newton's Laws of Motion?
Isaac Newton
Fig Newton
Cam Newton
Robert Newton
38
The law of ______ of momentum states that momentum is neither created nor destroyed.
reservation
conservation
gravitation
preservation
39
Which has more momentum, a large truck moving at 30 mph or a small truck moving at 30 mph?
Bazinga!
the small truck
both have the same momentum
the large truck
40
UNLESS, an _______________ force acts on it
Centripetal
Unbalanced
Balanced
Gravitational
41
If the momentum of an object changes and its mass remains constant:
its velocity is changing
there is a force acting on it
it is accelerating (or decelerating)
all of these are correct
42
A 1400kg car is moving at 30m/s. What is the momentum?
4200000000 kg m/s
48.8 kg m/s
42000 kg m/s
43
How many laws of motion were created by Sir Issac Newton?
4
1
3
2
44
What is the momentum of a 5kg object with a velocity of 17m/s, to the left?
-83 N left
83 N left
-85 kg*m/s left
85 kg*m/s left
45
A 2 kg ball is thrown at 3 m/s. what is the ball’s momentum?
3 kg·m/s forward
8 kg·m/s forward
6 kg·m/s forward
2 kg·m/s forward
