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Forces
Forces change the motion of objects in
predictable ways.
11.1
Forces change motion.
11.2
Force and mass determine acceleration.
11.3
Forces act in pairs.
11.4
Forces transfer momentum.
2
Forces change motion.
11.1
Newton's first law Objects at rest remain at
rest, and objects in motion remain in motion with
the same velocity, unless acted upon by an
unbalanced force.
force
net force
Newton's first law
inertia
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Forces change motion.
11.1
Newton's first law Objects at rest remain at
rest, and objects in motion remain in motion with
the same velocity, unless acted upon by an
unbalanced force.
force
net force
Newton's first law
inertia
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Forces change motion.
11.1
Newton's first law Objects at rest remain at
rest, and objects in motion remain in motion with
the same velocity, unless acted upon by an
unbalanced force.
force
net force
Newton's first law
inertia
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force
11.1
Forces change motion.
force
net force
Newton's first law
A push or a pull something that changes the
motion of an object.
inertia
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net force
11.1
Forces change motion.
force
net force
Newton's first law
The overall force acting on an object when all of
the forces acting on it are combined.
inertia
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Newton's first law
11.1
Forces change motion.
force
net force
Newton's first law
A scientific law stating that objects at rest
remain at rest, and objects in motion remain in
motion with the same velocity, unless acted on by
an unbalanced force.
inertia
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inertia
11.1
Forces change motion.
force
net force
Newton's first law
The resistance of an object to a change in the
speed or the direction of its motion.
inertia
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Force and mass determine acceleration.
11.2
Newton's second law The acceleration of an object
increases with increased force and decreases with
increased mass, and is in the same direction as
the force.
Newton's second law
centripetal force
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Force and mass determine acceleration.
11.2
Newton's second law The acceleration of an object
increases with increased force and decreases with
increased mass, and is in the same direction as
the force.
Newton's second law
centripetal force
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11
Force and mass determine acceleration.
11.2
Newton's second law The acceleration of an object
increases with increased force and decreases with
increased mass, and is in the same direction as
the force.
Newton's second law
centripetal force
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Newton's second law
11.2
Force and mass determine acceleration.
Newton's second law
centripetal force
A scientific law stating that the acceleration of
an object increases with increased force and
decreases with increased mass.
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centripetal force
11.2
Force and mass determine acceleration.
Newton's second law
centripetal force
Any force that keeps an object moving in a circle.
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Forces act in pairs.
11.3
Newton's third law When one object exerts a force
on another object, the second object exerts an
equal and opposite force on the first object.
Newton's third law
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Forces act in pairs.
11.3
Newton's third law When one object exerts a force
on another object, the second object exerts an
equal and opposite force on the first object.
Newton's third law
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Newton's third law
11.3
Forces act in pairs.
Newton's third law
A scientific law stating that every time one
object exerts a force on another object, the
second object exerts a force that is equal in
size and opposite in direction back on the first
object.
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Forces transfer momentum.
11.4
Momentum is a property of a moving object.
momentum
collision
conservation of momentum
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Forces transfer momentum.
11.4
Momentum is a property of a moving object.
momentum
Forces in collisions are equal and opposite.
collision
conservation of momentum
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Forces transfer momentum.
11.4
Momentum is a property of a moving object.
momentum
Forces in collisions are equal and opposite.
collision
Momentum is conserved in collisions.
conservation of momentum
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momentum
11.4
Forces transfer momentum.
momentum
collision
conservation of momentum
A measure of mass in motion the momentum of an
object is the product of its mass and velocity.
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21
collision
11.4
Forces transfer momentum.
momentum
collision
conservation of momentum
A situation in which two objects in close contact
exchange energy and momentum.
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conservation of momentum
11.4
Forces transfer momentum.
momentum
collision
conservation of momentum
A law stating that the amount of momentum a
system of objects has does not change as long as
there are no outside forces acting on that system.
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11.1
Forces change motion.
I. Forces change motion.
force
A. A force is a push or a pull.
net force
1. Types of Forces
Newton's first law
2. Size and Direction of Forces
inertia
3. Balanced and Unbalanced Forces
4. Forces on Moving Objects
B. Newtons first law relates force and motion.
1. Galileos Thought Experiment
2. Newtons First Law
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3. Inertia
KEY CONCEPT SUMMARY
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Force and mass determine acceleration.
11.2
II. Force and mass determine acceleration.
Newton's second law
A. Newtons second law relates force, mass, and
acceleration.
centripetal force
1. Newtons Second Law
2. Force Equals Mass Times Acceleration
3. Mass and Acceleration
B. Forces can change the direction of motion.
1. Centripetal Force
2. Circular Motion and Newtons Second Law
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Forces act in pairs.
11.3
III. Forces act in pairs.
Newton's third law
A. Newtons third law relates action and reaction
forces.
1. Action and Reaction Pairs
2. Action and Reaction Forces Versus Balanced
Forces
B. Newtons three laws describe and predict
motion.
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Forces transfer momentum.
11.4
IV. Forces transfer momentum.
momentum
A. Objects in motion have momentum.
collision
B. Momentum can be transferred from one object
to another.
conservation of momentum
C. Momentum is conserved.
1. Two Types of Collisions
2. Momentum and Newtons Third Law
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