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Laws of Motion
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What is Newton's first law of motion also known as?
Inertia
What does Newton's first law state about an object at rest?
It stays at rest unless
acted upon
What happens to an object in motion according to Newton's first law?
It continues moving at
constant speed
unless stopped
If a football is on the ground, what must happen for it to move?
It
must
be
kicked
How does a car's motion illustrate Newton's first law?
A car keeps moving until
brakes
are applied
What is inertia?
An object's tendency to
resist
changes in motion
Example: A
stationary
book remains still unless moved
What does Newton's second law explain?
The relationship between
force
,
mass
, and acceleration
What is the formula for Newton's second law?
F
=
F =
F
=
m
a
ma
ma
What does the variable *F* represent in the formula
F
=
F =
F
=
m
a
ma
ma
?
Force
applied to an object
What does the variable *m* represent in the formula
F
=
F =
F
=
m
a
ma
ma
?
Mass
of the
object
What does the variable *a* represent in the formula
F
=
F =
F
=
m
a
ma
ma
?
Acceleration
of the
object
What happens when you push a light shopping cart with a force of 10 N?
It
accelerates
quickly
How does pushing a heavy shopping cart with the same force compare to a light one?
It
accelerates
more slowly
What happens when you kick a football with a force of 20 N?
It
moves
much
faster
What are the key concepts of Newton's second law?
Force
: A
push
or pull causing
acceleration
Mass
: Amount of matter in an object
Acceleration:
Rate of change
of velocity
What does Newton's third law state?
For every
action
, there is an equal
reaction
What happens when one object applies a force on another?
The second object applies an
equal
force back
How does walking illustrate Newton's third law?
You push the ground, it
pushes
back
What occurs during a rocket launch according to Newton's third law?
Gases
eject down, rocket moves up
What are the key concepts of Newton's third law?
Action force
: Force applied by one object
Reaction force
: Equal and opposite force exerted back
What are the key terms related to Newton's laws of motion?
Inertia
External force
State of motion
Action
Reaction
Equal and opposite
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