Transcript The Nature of a Force A push or pull on an object

The Nature of a Force
A push or pull
on an object
Newton’s Laws of Motion
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Isaac Newton
Discovered 3 Laws
Of Motion in the
1600’s
Newton’s
First Law of Motion
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An object at rest will stay at rest unless an
unbalanced object acts upon it
An object moving at a constant velocity (speed) will
continue to move at that speed unless an
unbalanced forces stops it
This law is also called the Law of Inertia.
Inertia- the desire for an object to resist change in
motion. Or the desire for an object to stay in place
Newton’s
Second Law of Motion
The net force of an object is equal to the product
of its acceleration and mass.
F= m x a
You can change acceleration by changing the
mass
a= F
m
Newton’s
Third Law of Motion
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Every action has an equal but opposite
reaction
If one object exerts a force on another
object, then the second object will
exert a force in the opposite direction
Newton in pictures
Words to know….
force
acceleration
velocity
unbalanced forces
Balanced forces
inertia
mass
net force
friction
gravity
(text pages 312-339)
free fall
air resistance
momentum
centripetal force