Transcript Newton’s Toy Box - Little Miami Schools

Inertia and Newton’s First
Law of Motion
Sir Isaac Newton
Sir Isaac Newton
discovered the
principals (or laws)
that explain how
things move on
earth’s surface and
in space.
Newton’s First Law
 An object in motion will
remain in motion unless acted
on by an unbalanced force.
 Example: The ball this boy
kicked would keep going
forever if it weren’t for the
forces of gravity and wind
resistance, etc.
Newton’s First Law
 An object at rest will remain at
rest unless acted on by an
unbalanced force.
 Example: The ball will stay in
the same position forever
unless someone kicks it.
Newton’s First Law
 Inertia is the tendency of an object to
remain in motion or stay at rest.
 Inertia is the property of matter that
tends to resist any change in motion.
Newton’s First Law
 The more massive an object is, the
more inertia it has.
 Example:


If you push on a full-sized car, it
is very hard to move because it
has a lot of mass– it wants to
stay at rest.
If you push on a toy car, it is
very easy to move because it has
very little mass.
Newton’s First Law
 http://www.nbclearn.com/nfl/cuecard/50884