Transcript Force and Motion

Chapter 1
Force and Motion
Review Game
Begin Game
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Choose a category
Force and
Motion
=
Gravity
Vocabulary
Friction
Story Problems
Force and Motion
1
4
2
5
7
3
6
Friction
1
2
3
4
Gravity
1
3
2
4
5
Vocabulary
1
4
7
3
2
5
6
8
9
Story Problems
2
1
4
3
5
6
7
Force and Motion
1
When velocity decreases, this could
be referred to as
Hint: There are 3 acceptable
answers.
Acceleration, Deceleration, or
Negative Acceleration
Force and Motion
2
To calculate an object’s
acceleration, you need to know
what?
Starting velocity, final
velocity, and the time it takes
to change velocity
Force and Motion
3
Force is expressed in which
unit
Newtons
Force and Motion
4
• The SI unit for speed is
m/s
or
meters/second
Force and Motion
5
• Do you accelerate if you travel in a
circle at 50 m/s?
Yes because you are
constantly changing
direction
Force and Motion
6
60
Velocity (m/s)
50
40
30
20
10
0
1
2
3
4
Time (s)
5
6
This is a graph
of a roller
coaster car
moving up a hill.
What does the
straight upward
slope on the
graph show?
Positive Acceleration
Force and Motion
7
60
Distance (m)
50
40
30
20
10
0
1
2
3
4
5
6
Time (s)
Average Speed
This graph
shows
distance
traveled
during a bike
race. What
does this
graph
represent?
Friction
1
What are the 2 main types of
friction?
Static & Kinetic
Friction
2
Give 3 examples of lubricants.
Grease, Oil, and Wax
Friction
3
The amount of friction depends on 2
factors, what are they?
-Amount of force pushing the
surfaces together
-Texture (roughness or
smoothness) of the surfaces
Friction
4
• Does surface area affect the amount
of friction?
No
Gravity
1
• Gravitational force depends on the
_________ of the objects and the
distance between them.
Mass
Gravity
2
• If Earth’s mass doubled,
what would happen to your
weight and why?
•Your weight would
increase because
gravity increases.
Gravity
3
• The force of gravity is
____________ between two
objects that have greater
masses.
greater
Gravity
4
Objects of any size exert a
____________ force.
gravitational
Gravity
5
• The amount of gravity between 1 kg of
lead and the Earth is ______________ the
amount of gravity between 1 kg of
marshmallows and Earth?
the same as
Vocabulary 1
• An object’s change in position
relative to a reference point is
Motion
Vocabulary 2
• What describes the relationship
between force, mass, and
distance?
• Law of Universal
Gravitation
Vocabulary 3
• The distance traveled divided by the time
it took to travel that distance determines
an object’s
Speed
Vocabulary 4
• The speed of an object in a
particular direction
Velocity
Vocabulary 5
• Any push or pull
Force
Vocabulary 6
The force that opposes all motion
Friction
Vocabulary 7
• Information that is collected
during your experiment
Data
Vocabulary 8
• Any change in velocity
Acceleration
Vocabulary 9
• Force of attraction between objects
that is due to their masses
Gravity
Story Problems 1
• A bird flies 150 m for 10 s, then 200 m for
10 s, and then 100 m for 5 s. What is the
bird's average speed?
18 m/s
Story Problems 2
• You are in Chicago, IL. You decide to
head south to Austin, TX. In one hour,
you travel 80 km. Your velocity is
80 km/h south
Story Problems 3
• A plane passes over Somton with a
velocity of 8,000 m/s north. The plane
passes over Allton at a velocity of 10,000
m/s north 40 s later. What is the plane's
acceleration from Somton to Allton?
50 m/s/s north
Story Problems 4
• You are training to run the 100 m race at
a track and field meet. You time yourself
and find you can run it in 10 seconds.
How fast are you able to run it?
10 m/s
Story Problems 5
• You ride your bike north for 100 m at a
constant speed of 5 m/s. Your acceleration is
There is no
Acceleration
Story Problems 6
• A hot air balloon floats low in the sky.
You see it pass your house and 10 seconds
later pass a building you know to be 50 m
away. You estimate the speed of the
balloon to be
5 m/s
Story Problems 7
• In a storm, the wind blows with a velocity
of 10 m/s south. Five seconds later, the
wind's velocity is 25 m/s south. What is
the acceleration of the wind?
3 m/s/s south
Good Luck on your Chapter 1 Test
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