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Chapter 5 6
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3
Measuring Motion
What is Force?
Gravity
Newtons Laws
Misc.
Friction
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This is when an object is changing position.
5
What is moving?
6
Distance and time are two of the factors needed
to determine this.
7
What is speed?
8
A building compared to a moving student.
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What is a reference point?
10
The speed of an object in a particular direction.
11
What is velocity?
12
The rate at which velocity changes over time.
13
What is acceleration?
14
This is needed to cause an object to start moving.
15
What is an unbalanced force?
16
A combination of all forces acting on an object.
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What is net force?
18
Simply a push or pull.
19
What is a force?
20
The SI unit for force.
21
What is newton?
22
The net force if one dog is tugging a rope 12N to
the north and another dog is tugging the rope 10N
to the south.
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What is 2N north?
24
A force that opposes motion between two surfaces
that are in contact with each other.
25
What is friction?
26
Force and the roughness of surfaces.
27
What are two factors that affect friction?
28
Car engine parts wearing out due to the lack of
oil.
29
What is harmful friction?
30
Rolling and sliding are two types of friction
that occurs between moving surfaces.
31
What is kinetic friction?
32
Force is applied and an object does not move.
33
What is static friction?
34
A force of attraction between objects that is due
to their masses.
35
What is gravity?
36
Discovered that the same unbalance force affected
the motions of a falling apple and the moon.
37
Who is Sir Isaac Newton?
38
This increases as mass increases.
39
What is gravitational force?
40
Gravitational force decreases between objects.
41
What is as distance increases?
42
All objects in the universe attract each other
through gravitational force. The size of the
forces depends on the masses of the objects and
the distance between the objects.
43
What is the Universal Law of Gravitation?
44
The tendency of objects to resist any change in
motion.
45
What is inertia?
46
An example of all forces acting in pairs.
47
What is Newtons 3rd Law of Motion?
48
A sled continuing to slide at a constant velocity.
49
What is Newtons 1st Law of Motion for objects in
motion?
50
The equation that is included in Newtons 2nd Law
of Motion?
51
What is F m a?
52
A car stopped at a traffic light.
53
What is an example of Newtons 1st Law of Motion
for objects at rest?
54
A measure of the amount of matter in an object.
55
What is mass?
56
A measure of the gravitational force exerted on
an object.
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What is weight?
58
m/s (meters per second)
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What is the SI unit for speed?
60
O newtons
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What is the measure of balanced forces?
62
1686
63
What year did Newton explain the relationship
between force and motion?