Transcript Chapter 5 Forces and Motion

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Speed
Laws of
Newton
Simple
Machines
Gravity
and Force
Terms of
Motion
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200
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Speed
100
Speed is distance divided by ______.
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Speed
100 A
What is time?
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Speed
200
Speed in a certain direction is
____________.
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Speed
200 A
What is velocity?
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Speed
300
What is the average speed when a car
travels 30 kilometers in one hour and
then 50 kilometers in the next hour?
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Speed
300A
What is 40 km per hour?
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Speed
400
How far would a bike travel is it could go
15 miles an hour for 4 hours?
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Speed
400A
What is 60 miles?
Distance = speed x time
D= 15 m/hour x 4 hours
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Speed
500
A = F/m
What is the acceleration of a 2 Newton
force with a mass of 0.5 kg?
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Speed
500A
What is 4 m/s2 ?
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Laws of Newton
100
Newton’s first law state that:
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Laws of Newton
100A
What is : an object in
motion stays in motion
and an object at rest
stays at rest unless
some other force acts
on it.
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Laws of Newton 200
The formula that best describes Newton’s
Second law.
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Laws of Newton
200A
What is F = m x a?
Or
A = F/m?
F= Force
M= mass
A= acceleration
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Laws of Newton
300
This is Newton’s Third Law.
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Laws of Newton
300A
What is : for every action there is an equal
and opposite reaction.
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Laws of Newton
400
Which is an example of
Newton’s Third Law.
a. A rock sitting on a cliff.
b. A ball rolling down a hill.
c. A rocket taking off in space.
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Laws of Newton
400A
What is C: A Rocket taking off in space.
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Laws of Newton
500
Name a situation when Newton’s First
Law could be used to explain motion.
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Laws of Newton
500A
Planets or satellites orbiting in space.
Objects sitting still.
The toy balls on strings.
A ball rolling. (until friction stops it)
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Simple Machines
100
List 4 types of simple
machines.
Answer
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Simple Machines
100A
What are: wedge,
pulley, inclined
plane, lever, wheel,
screw.
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Simple Machines
200
Give an example of a 2nd class lever and
locate the fulcrum, effort and load.
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Simple Machines
200A
What is a wheel
barrel.
Wheel= fulcrum
Barrel= load
Handle=effort
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Simple Machines
300
Give an example of a third class lever and
label the fulcrum, effort and load.
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Simple Machines
300 A
Some examples could
be: baseball bat,
hockey stick, golf
club, broom.
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Simple Machines
400
________ _________ = OUT PUT Force
Input Force
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Simple Machines
400A
What is the mechanical
advantage.
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Simple Machines
500
A 200 Newton box needs to be lifted 3
meters. What would be the mechanical
advantage of using a 12 meter ramp.
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Simple Machines
500 A
What is 4?
12 m x 200 N
3 m x 200 N
2400/600 = 4
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Gravity and Forces
100
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9.8
2
m/s
Answer
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Gravity and Forces
100A
What is the
acceleration due to
gravity on Earth?
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Gravity and Forces
200
How fast would a rock
be traveling if it falls
for 2 seconds
without hitting the
ground? (Assume
there is no air
friction.
Answer
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Gravity and Forces
200A
What is 19.6
m/s?
9.8 m/s2 x 2 Sec.
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Gravity and Forces
300
This is the unit used
to measure force.
Answer
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Gravity and Forces
300A
What is a Newton?
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Gravity and Forces
400
The SI unit used for measuring
acceleration is:
Answer
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Gravity and Forces
400A
What is meters per
second per second
or
m/s .
2
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Gravity and Forces
500
How much input force (in
Newtons) would be
need to lift a 150 N
mass using a pulley
system with a
mechanical advantage
of 5?
Answer
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Gravity and Forces
500A
What is 30 N?
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Terms of Motion
100
A Push or a Pull is a _________.
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Terms of Motion
100A
What is a force?
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Terms of Motion
200
An object that is speeding up or slowing
downs is said to be __________.
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Terms of Motion
200A
What is accelerating?
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Terms of Motion
300
This is the term used
to describe a
resistance to
change in position.
Answer
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Terms of Motion
300A
What is
inertia?
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Terms of Motion
400
The SI unit for energy.
It is measured by
multiplying Force
times distance.
_Work_= F X D
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Terms of Motion
400A
What is a joule?
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Terms of Motion
500
This is a force that
resists motion when
two objects come in
contact or rub
against each other.
Answer
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Terms of Motion
500A
What is friction?
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References
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Created by Mary Frederick