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Grade 12
Second Quarter
Physics😟
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Cards (51)
What is the term for the coordinate system used to determine motion?
Cartesian coordinate system
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How is motion measured in a Cartesian coordinate system?
Motion is measured using
x and y coordinates
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What is
instantaneous velocity
?

Velocity of an object at a specific moment
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What does the magnitude of velocity refer to?
The
speed
of the object
without direction
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What is a projectile?
An object given an
initial velocity
and influenced by
external forces
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What external forces influence a projectile?
Gravity
and
air resistance
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What is the total velocity of a projectile after launch?
The vector sum of horizontal and vertical components
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How is projectile motion characterized?
By the influence of
gravity
and
air resistance
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What does Newton's
first
law state?

An object at rest stays at rest unless acted upon by an external force
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What is the formula for Newton's
second
law?

F
⃗
=
\vec{F} =
F
=
m
a
⃗
m\vec{a}
m
a
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What does Newton's third law state?
For every action, there is an
equal and opposite
reaction
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What is the significance of Newton's second law?
It
defines force
and provides a way to
measure
it
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What are the properties of forces according to Newton's third law?
Forces occur in pairs
,
act in opposite directions
, and
act on different systems
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How is weight defined in physics?
Weight is the
force of gravitational attraction
on an object
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What is the direction of the weight vector?
Points
downward
towards the
center of the Earth
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What is the relationship between mass and weight?
Weight is
proportional
to mass under
gravitational
attraction
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What does the term "gravitational attraction" refer to?
The force exerted by a planet on an object due to its
mass
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What is the significance of Galileo's experiments?
They established a
description
of motion and disproved previous
theories
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What is the purpose of Newton's laws of motion?
They control the principles of
dynamics
and describe
motion
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What is the relationship between force and acceleration according to Newton's second law?
Force is equal to
mass
times
acceleration
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How does the concept of balanced forces relate to motion?
Balanced forces result in
no
change
in
motion
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How does mass affect gravitational force?
Greater mass results in a
stronger
gravitational force
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What happens when forces are unbalanced?
Unbalanced forces cause a
change in motion
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What is the effect of gravity on objects?
Gravity
pulls objects towards the center of the Earth
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What is the formula for calculating gravitational force?
F<sub>g</sub>
=
mg
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What is the significance of the weight vector?
The weight vector indicates the
direction
and
magnitude
of gravitational force
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How does the concept of inertia relate to Newton's first law?
Inertia is the tendency of an object to
resist changes in its state of motion
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What is the relationship between force and motion?
Force
causes changes
in the motion of an object
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What is the role of external forces in motion?
External forces can
change the motion
of an object
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How does the concept of acceleration relate to force?
Acceleration is
directly proportional to the net force
acting on an object
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What is the significance of the vector sum of forces?
The vector sum determines the
net force
acting on an object
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What is the effect of balanced forces on an object?
Balanced forces result in
no change in the object's motion
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How do unbalanced forces affect an object's motion?
Unbalanced forces cause the object to
accelerate or change direction
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What is the relationship between mass and gravitational force?
Gravitational force is
proportional
to the mass of the objects involved
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What is the role of gravitational force in the motion of celestial bodies?
Gravitational
force governs the
motion
of
celestial
bodies
in
space
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How does Newton's law of universal gravitation relate to mass?
It states that
gravitational force
is proportional to the
product
of the masses
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What is the formula for Newton's law of universal gravitation?
F
=
G
\frac{
m_1
m_2
}{
r^2
}
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What does the gravitational constant (G) represent?
It is a
proportionality constant
in the law of
universal gravitation
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How does distance affect gravitational force?
Gravitational force decreases as the distance between objects
increases
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What is the significance of gravitational fields?
Gravitational fields represent the influence of
mass
on other masses
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