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					NEWTON’S FIRST LAW OF MOTION
                By Stacie Green
   We know that “motion” is any object that is
    moving.
   We know that we describe motion in 3 ways:
    ◦ HOW it moved
    ◦ The DIRECTION it moved
    ◦ The SPEED it moved
   To move something, a “force” has to happen.
   A FORCE is a push or a pull
   To get a toy car to move, the force of pushing
    is applied as we push it across the floor.
   We can get it to move, but now how do we
    get it to stop?
   An object will stop when it loses speed or
    “momentum.”
   An object will stop when a “force” acts and
    stops it.
   Our toy car stops when it runs into the wall.
   What else makes something stop…
•   We know that friction can help objects
    stop.



•   Friction is when 2 objects rub
    together.
•   Friction can help you-tennis shoes on the
    gym floor so you have grip and won’t fall
    down.
•   Friction can hurt you-sock feet on the dance
    floor and you slide into a wall.




   The friction from the carpet and wheels on
    the toy car help it lose speed, slow down, and
    stop.
   An object is at rest when it is still.
   A force is still acting on the object to keep it
    still and keep it in place.
   GRAVITY
   Gravity pulls objects DOWN.
   Gravity is what keeps you in your seat, brings
    your ball back down, and you back down after
    you jump.
   We know how something moves and how
    something stops.
   We know that a force is a push or pull that
    makes things move.
   We know friction is 2 objects rubbing
    together.
   We know gravity pulls/pushes everything
    back down.
   There’s more to motion-Let’s find out…
   You have a hockey puck
   It is not moving, it is at rest
   To get the puck to move, you have to do
    something to the puck like hit it. This is the
    force.
   Without the force, it will stay in the same spot
    and be at rest.

   Watch this to learn more!
    ..\Desktop\Newton_s_First_Law_of_Motion.as
    f
   “An object at rest remains at rest
    unless acted on by another force.”

   An object will stay at rest or “look still” until
    you do something to make it move.
   The toy car stays at the starting line (at rest)
    until you push it (apply a force).
   The hockey puck sits on the ice (at rest) until
    you push it with the stick (apply a force).
   Think of a train-that train drives down a
    straight track and stays going in a straight
    direction.
   What happens when the track curves left or
    right?
   The train turns and goes left or right
   “An object in motion in a straight line
    tends to say in motion in a straight
    line unless acted upon by another
    force.”
   An object will go straight until a force makes
    it go another direction.
   Your paper airplane flies straight until gravity
    pushes it down.
   Thomas drives straight until the driver makes
    it “turn” with the track.
   Let’s see what we’ve learned so far about
    motion!
   Give this quiz a try and test your motion
    knowledge!
A.   Any object that is moving.

B.   Any object that flies.

C.   Any object that drives on the road.

D.   Any object this is sitting still.
                  You’re right!

   Motion is described as any object that
                 is moving!
       Anything that is moving is in motion.

   We can say motion is any object that is
                   moving.
          Try the question again!!
A.   A pull

B.   Turning the key

C.   Throwing it

D.   A push
   We have to “push” the toy car to put it
                into motion!

   You’ve really been paying attention!!
   Think about what we have to do to get that
                  toy car moving.
      It won’t move by itself, we have to do
            something to get it to move.
   Our forces are push and pull, which one will
            make the car move forward?

              Go back and try it again!!
A.   Speed, how fast, and how far

B.   Speed or how fast or slow an object moves

C.   At rest or not at rest and the direction

D.   Speed, direction, and how it is moving
   We describe an object’s motion by
    saying how fast or slow it goes, the
     direction it goes in, and by saying
             “how” it is moving.

            Try another question!
   When an object is moving, we describe “how”
    it is moving, how fast or slow it is going, and
              the direction is it moving.

                Try the question again!
A.   When 2 objects rub together causing it to
     slow down or stop.

B.   A type of genre

C.   A force that makes things move

D.   A story you would write
   Friction is when 2 things rub together.

   Friction is one reason why things stop
                 or slow down!

                   Way to go!!!
   Friction is why you slide on your sock feet in
           the dance studio or slide on ice.
     Friction is why the marbles would spin in
             space, but not on the carpet.
       Friction is 2 things rubbing together.


                      Try it again!
A.   Remain at rest until a force acts on it or
     something makes it move

B.   Start moving by itself

C.   Push or pull itself

D.   Be out of energy
              You’re Right!
   An object at rest will stay that way
         until a force acts on it.
 Your hockey puck stays still until you
           hit it with the stick!
         Let’s do another one!
             Think of your hockey puck
             
     When it is sitting on the ice, is it moving?
   Does it move by itself or do you have to hit it
                    with your stick?

          Go back and try the question again!
A.   Gravity

B.   Friction

C.   No wind

D.   Poor design
       YES! The airplane lands because
           gravity is pushing it down!

   Keep at it! You’re doing a great job!!
   Gravity is the force that pulls everything down
                         to Earth.
      Gravity will act on the paper airplane and
                      push it down.

                 Try the question again!
A.   It falls

B.   It stops moving

C.   Another force acts on the object and
     changes the direction.
              You’ve really got it!!

   Thomas stays straight until the driver
    turns him (force would be pushing) to
             curve with the track!
    Thomas the Train moves down the straight
                     railroad track.
     He doesn’t turn to match the track on his
                          own.
   A force is applied (the driver turning him) and
           makes him curve with the track.

                Go back and try it again!
                  YOU DID IT!!

        You really know your stuff!
   You made it through with flying colors!

   No doubt you’ll do great on your paper
              assessment too!!
   Sounds are courtesy of Microsoft Clip Art
   Pictures courtesy of the following: Microsoft
    Clip Art,
    http://www.freefever.com/animatedgifs/cars.
    html, clipart-for-free.blogspot.com,
   Image.google.com, and Green family photos
   Video courtesy of Discovery Education

				
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posted:8/7/2011
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